Valve Regulated Pocket Plate Nickel Cadmium Battery. Technical Manual

Valve Regulated Pocket Plate Nickel Cadmium Battery Technical Manual

Contents Pages 1.0. Introduction to VRPP battery 2.0. VRPP - Solution to varied applications 3.0. xygen recombination cycle - A technological innovation 4.0. Battery sizing principles 5.0. Constructional features of the VRPP battery 5.1 Plate construction 5.2 Separator 5.3 Electrolyte 5.4 Terminal current carriers 5.5 Venting system 5.6 Cell container 6.0. Advantages of the VRPP battery 7.0. Characteristics of VRPP battery 7.1 Capacity and nominal voltage 7.2 Internal resistance 7.3 Effect of temperature on performance 7.4 Short circuit values 7.5 Loss due to self discharge 7.6 Cycling 7.7 Water consumption 7.8 Gas evolution 8.0. Battery charging 8.1 Charging methods 8.2 Charge acceptance 8.3 Commissioning requirements 9.0. Special operating factors 9.1 Electrical abuse 9.2 Mechanical abuse 10.0. Installation and storage 10.1 Emplacement 10.2 Ventilation 10.3 Storage 11.0. Maintenance of VRPP batteries in service 12.0. Refurbishment of VRPP batteries 13.0. VRPP range 14.0. Cell performance data in amperes at end voltage 1.00V/cell 15.0. Cell performance data in amperes at end voltage 1.05V/cell 16.0. Cell performance data in amperes at end voltage 1.10V/cell 17.0. Cell performance data in amperes at end voltage 1.14V/cell 18.0. Cell performance data in watts at end voltage 1.00V/cell 19.0. Cell performance data in watts at end voltage 1.05V/cell 20.0. Cell performance data in watts at end voltage 1.10V/cell 21.0. Cell performance data in watts at end voltage 1.14V/cell 22.0. Battery arrangement - Racks 01 01 01 02 03 04 04 04 05 05 05 06 06 06 07 07 08 08 08 09 10 10 11 11 12 13 13 14 14 15 16 17 18 19 20 21 22 23 24

1.0 Introduction to VRPP battery Nickel Cadmium battery continues to be most reliable battery systems available as a source of DC power. Its advantageous features enables it to be most preferred battery systems. With the advent of valve regulated lead acid battery, a new concept was available, a battery that did not require water replenishment. HBL NIFE on this concept developed the VRPP recombination nickel cadmium pocket plate battery. 2.0 VRPP - Solution to varied applications VRPP batteries are designed to meet the needs of applications requiring the traditional high reliability of nickel- cadmium pocket plate cells without the need to top-up with water. They are indeed the best solution for installations, whether they are UPS systems, emergency lighting systems, telecommunications, where the risk of failure of the system is unacceptable. VRPP batteries are also eminently suitable for remote applications such as photovoltaic systems, offshore applications and switching substations, where the system must have total reliability without the need for battery maintenance. Emergency lighting Railway signaling Switchgear Telecommunications Fire and Security systems UPS ffshore oil and gas Photovoltaics Process control Mass transit 3.0 xygen recombination cycle - A technological innovation In a conventional pocket plate nickel cadmium flooded electrolyte battery, water is lost from the battery on o v e r c h a r g e d u e t o t h e f o l l o w i n g r e a c t i o n s : At cathode (negative) 4H + 4e 2 2H 2 + 4H (Hydrogen evolution) At anode (positive) _ 4H _ 2 + 2H2 + 4e (xygen evolution) This corresponds to a theoretical loss of 36 g of water for Ah of overcharge ie., 0.335 cc per Ah. Hence a conventional cell requires periodic addition of water. The frequency of this operation depends upon the cumulative amount of charge received and the operating temperature. During charging process evolution of xygen begins just before the positive plate is fully charged state and then becomes the main reaction when the fully charged condition is reached. The cadmium negative plate has a better charge acceptance than the positive plate. Hydrogen is not evolved until the plate is virtually fully charged. The VRPP battery has been designed with an excess of Cadmium active material to enhance this effect and ensure that oxygen commences prior to the hydrogen evolution. The oxygen which is produced at the positive plate surface is collected by the special porous separator and thus not allowed to escape from the region between the plates. Some displacement of electrolyte within the separator occurs, thus generating extra unfilled pores for the diffusion of xygen directly to the adjacent cadmium negative plate. 1

When xygen reaches the negative plate it reacts either chemically: 2Cd + +2H 2Cd (H)...1 2 2 2 R electrochemically 2 + 2H 2 + 4e 4H...2 Reaction 1 has the effect of chemically discharging some of the cadmium to cadmium hydroxide. The current passing through the battery is used to recharge this material. Reaction 2 consumes the current directly. Thus the hydrogen evolution at the negative plate is suppressed because the preferred reaction is oxygen recombination. The total process of oxygen generation and consumption is referred to as an oxygen recombination cycle. The efficiency of this oxygen recombination process depends upon the relationship between the rate at which oxygen is produced and the rate at which it can be collected and transferred to the negative plate surface. The rate of collection and transfer of oxygen is controlled by the separator type and the cell design. The rate at which oxygen is produced on overcharge is directly related to the charge current once the positive plate has reached a full state of charge. The charge current in turn is controlled by the charging voltage level set on the charging equipment and the ambient temperature. By controlling the charge voltage high efficiencies can be obtained and in this way the rate of water loss can be reduced to a fraction of that from conventional batteries. Though the efficiency of this oxygen recombination is high it will never achieve 100% as small quantities of oxygen will escape from the separator before reaching and reacting at the negative plate. Thus a small quantity of hydrogen will ultimately be generated and hence a low rate of water loss will occur. The battery is designed to accommodate this by provision of a generous electrolyte reserve both above and around each cell pack within the battery. This ensures a long service life without the need to top-up with water. The VRPP battery is fitted with a low pressure vent on each cell, on overcharge the cell have an internal pressure above atmospheric pressure. This vent provides an outlet for the release of small quantities of hydrogen and non combined oxygen and thus controls the internal pressure. If the pressure falls below the release pressure, the vent reseals to prevent air entering inside the cells and minimizes self-discharge reactions. 4.0 Battery sizing Battery sizing principles VRPP is designed to impart an comfortable acquisition for the consumer, based on the performance data generated after the cell kept on float for several months Thus in a situation at normal ambient temperature without any specific requirement with regard to recharge time the published data can be used directly to size the battery. However, if there are requirements with regard to recharge time or temperature then this will modify the result. Examples A standby system is to be sited in a building with an ambient temperature of 20 C and the temperature will always lie between 10 C and 30 C. It has a maximum voltage of 54 V and a minimum voltage of 42 V and requires a back-up of 48 A for 3 hours. In this case a simple 1.42 V/cell single level charger without temperature compensation can be used. Number of cells = 54/1.42 = 38 and the final voltage will be 42/38 = 1. V/cell. The Cell performance data shows that the VRPP gives 50.2 A for 3 hours to 1.10 V/cell and so the battery should be 38 cells of VRPP. At this single level voltage and at this temperature the battery would give 20 years without topping-up. 2

However, if for this example there was a restriction that the battery must give 90% of its performance after 10 hours from a totally discharged state then certain modifications need to be made to the calculation. If the single level 1.42 V/cell charger is retained, then from the graph 4 it can be seen that after 10 hours about 75% of the capacity is available and so the battery size will have to be increased by the factor 90/75 or, in other words, 20%. Thus for a current of 57.6 A (48 A + 20 %) to 1.10 V/cell the battery required is 38 cells of VRPP as this gives 59.2 A to 1.10V/cell. This battery will still give the 20 years without topping-up. From the graph 4, it can be seen that a voltage of 1.45 V/cell gives 80% of the capacity after 10 hours is need to increase the cell capacity to compensate for the charge. 90/80 ie., 12.5%, a current of 54 A (48 A + 12.5%). However, the battery has to be recalculated as, with the same voltage window, the higher charge voltage will modify the end of discharge voltage. Thus, the number of cells = 54/1.45 = 37 and so the end of discharge voltage becomes 42/37 = 1. V. The VRPP performance table gives VRPP, which can discharge a current of 55.2 A to 1.14 V/cell. Hence, in this case the battery is 37 VRPP. The disadvantage of this solution is that a single level charge of 1.45 V/cell will only give 10 years without maintenance and so to achieve the 20 year maintenance level a two stage charger is required. 5.0 Construction features of VRPP battery The construction of VRPP is based on conventional pocket plate technology by introducing special features to enhance the low water consumption, by means of recombination cycle. 5.1 Plate Construction The Nickel Cadmium cell consist of two groups of plates, one containing Nickel Hydroxide (the positive plate) and other containing Cadmium Hydroxide (the negative plate). The active material of pocket plate are retained in pockets formed from double perforated nickel-plated steel strips. These pockets are mechanically linked together, cut to the size corresponding to the plate width and compressed to the final plate dimension. This process leads to a component which is not only mechanically robust but also retains its active material within a steel boundary which promotes conductivity and minimizes electrode swelling. These plates are then welded to a current carrying busbar which further ensures the mechanical and electrical stability of the product. The alkaline electrolyte does not react with steel, which means that the supporting structure of the VRPP battery stays intact and unchanged for the life of the battery. There is no corrosion and no risk of sudden death. 3

5.2 Separator The separator is an important feature of the VRPP battery. It is a poly-propylene fibrous material. Using this separator and plastic spacing ribs, the distance between the plates is carefully controlled to give the necessary gas retention to provide the level of recombination required. By providing a large spacing between the positive and negative plates and a generous quantity of electrolyte between plates, the possibility of thermal runaway is eliminated. Valve regulated vent (Low pressure, flame arresting) Nickel coated terminal pillar (Provides good electrical conductivity) Special polypropylene fibrous separator (facilitates recombination) Positive plate (Double perforated steel strip with positive active material) Polypropylene cell container (Fusion welded to lids, makes the cell mechanically sturdy and facilitates visual electrolyte level inspection) Negative plate (Double perforated steel strip with negative active material) VRPP battery is available in both welded (shown here) and bolted construction. 5.3 Electrolyte The electrolyte used in VRPP battery is a solution of Potassium Hydroxide and Lithium Hydroxide to give the best performance and life over a wide range of temperature. The electrolyte concentration is such that it allow the cell to be operated down to -20 deg.c, and it is not necessary to change the electrolyte during the life of the cell It is an important consideration of VRPP, and indeed of all nickel-cadmium batteries, that the electrolyte concentration does not change during charge and discharge. It retains its ability to transfer ions between the cell plates irrespective of the charge level. 5.4 Terminal current carriers The Nickel plated terminals are connected to plates by nut and bolt / welded construction. 4

5.5 Venting system VRPP battery is having a unique venting system. The vent releases the Hydrogen and non combined xygen, when the internal pressure increases more than 0.2 bar. If the internal pressure is less, the system reseals to prevent the air entering inside the cell. A flame arresting porous disc is incorporated in the venting system to prevent the possibility of any external ignitions spreading into the VRPP cell. 5.6 Cell container VRPP cells are available in polypropylene containers. The polypropylene container can withstand mechanical stress, shocks and vibrations. It performs in extreme temperature without losing strength, insulating well and resists corrosion. The translucent nature of polypropylene allows visual check of electrolyte. If electrolyte level is less than the minimum indication level, there is a provision to adjust it. 6.0 Advantages of the VRPP battery Long life Reliable and predictable performance Resistant to abuse, electrical and mechanical Zero or low maintenance No sudden death failure due to internal corrosion Wide operating temperature range Low installation costs Negligible gassing - gassing under normal charging conditions is minimal making it safe for installation in human environments such as offices and hospitals 5

7.0 Characteristics of VRPP battery 7.1 Capacity and nominal voltage The rated capacity C of a cell is the capacity in ampere hours (Ah) available at 5 hr discharge rate to 1.0 5 Volt/cell in accordance with IEC 60623 and standard nominal voltage is 1.2 Volt/cell. In practice VRPP c e l l s a r e u s e d i n f l o a t a p p l i c a t i o n s 7.2 Internal resistance The internal resistance of the cell varies with the type of service and state of charge and is therefore, difficult to define and measure accurately. The most practical value for normal application is the discharge voltage response to a change in discharge current. The internal resistance per 1/C of a VRPP cell at room 5 temperature when measured after float charging at normal temperature is 80 milliohms for VRPP 8 to VRPP 50 and 100 milliohms to VRPP 55 to VRPP 744. These figures are for a fully charged cell. For lower s t a t e s o f c h a r g e t h e v a l u e i n c r e a s e. For cells 50% discharged, the internal resistance is about 20% higher and when the cells with 90% discharged condition, the internal resistance is about 80% higher. The internal resistance of fully d i s c h a r g e d c e l l h a s v e r y l i t t l e r e l e v a n c e. 7.3 Effect of temperature on performance Variation of cell performance with the temperature are considered in sizing a battery. Low temperature operation gives a low performance due to the decrease in conductivity of the electrolyte at low temperature. The normal recommended operating temperature range is 0 deg. to 40 deg. C. Performance variation in VRPP cells with temperature 1.1 1 Derating factor 0.9 0.8 5 Hour rate 30 Minute rate 1 Minute rate 0.7 0.6 0 5 10 15 20 25 30 35 40 45 Temperature: Deg. C Graph 1 6

7.4 Short-circuit values The typical short-circuit value in amperes for an VRPP cell is approximately 15 times the ampere-hour capacity. The VRPP battery is designed to withstand a short-circuit current of this magnitude for many minutes without damage. 7.5 Loss due to self discharge The state of charge of VRPP cells on open circuit slowly decreases with time due to self-discharge. This decrease is relatively rapid during the first two weeks but then stabilizes to about 2-3% per month at 20 deg.c. The self-discharge characteristics of a nickel-cadmium cell are affected by the temperature. At low temperatures the charge retention is better than at normal temperature and so the open circuit loss is reduced. However, the self-dischrage is significantly increased at higher temperatures. The open circuit loss for VRPP for the standard temperature and the extremes of the normal operating range is shown in the graph 2. It is necessary to recharge the VRPP cells each year. Typical open circuit loss variation with time Percentage of initial capacity (%) 100 90 80 70 60 70 40 C 0C 20 C 0 50 100 150 200 250 300 350 400 pen circuit period (days) Graph 2 7

7.6 Cycling VRPP is a low maintenance battery used in standby application and not in continuously cycling applications. The battery is designed using conventional pocket plate electrode technology. Therefore it retains the cycling capability of the parent product. The cycling operation requiring deep discharges and fast recharges involves significant gas evolution and ultra low maintenance properties of the product will be severely reduced. 7.7 Water consumption The VRPP battery works on the xygen recombination principle and therefore has a much reduced water consumption. The level of recombination of these cells are 85-95%. Normal vented type cells will have only 30-35% recombination efficiency. At suitable charging voltages and temperature the VRPP cell will not need water topping for a longer time when compared to the conventional vented type Nickel Cadmium Pocket Plate batteries. 7.8 Gas evolution The gas evolution is a function of the amount of water electrolyzed into hydrogen and oxygen which is not involved in the recombination cycle. The electrolysis of 1 cc of water produces about 2000 cc of gas mixture and this gas mixture is in the proportion of 2/3 hydrogen and 1/3 oxygen. Thus the electrolysis of 1 cc of water produces about 1300 cc of hydrogen. As stated in the previous paragraph, under normal recommended float conditions VRPP has a recombination level of 85% to 95% and so the amount of water which is electrolyzed into gas is small. Typically an VRPP cell will electrolyze about 0.002 cc of water per Ah of cell capacity per day. This value will be smaller or larger depending on the float voltage value. Thus a typical value of gas emission would be 3.5 cc per Ah of cell capacity per day, or 2.5 cc of hydrogen per Ah of cell capacity per day. Effect of charging voltage on maintenance free period 1.46 Float charge voltage per cell 1.45 1.44 1.43 1.42 1.41 1.40 8 10 12 14 16 18 20 22 24 Maintenance free period (years) Temperature 20 C Graph 3 8

8.0 Battery charging In order to achieve the ultra low maintenance properties of the VRPP battery, it is necessary to control the charge input to the battery to minimize the rate of water loss during the life of the product. Therefore it is important to adhere to recommended charge conditions. 8.1 Charging methods VRPP batteries may be charged by the following methods: A) Two rate charging: The initial stage of two rate constant potential charging consists of a first charging stage, with a current limit of 0.1 C to a maximum voltage of 1.45 V/cell. 5 Alternatively, if a faster rate of recharge is required, a voltage limit of 1.55 V/cell can be used. However, if frequent recharges are required this will increase the rate of water loss. After this first stage the charger should be switched to a second maintenance stage at a float voltage in the range of 1.41 to 1.43 V/cell. After a prolonged mains failure the first stage should be reapplied manually or automatically. B) Single rate charging: VRPP batteries may be float charged at 1.41 to 1.43 V/cell from a fully discharged condition to a high stage of charge. This is detailed in section 7.2 and about 80% of the capacity will be available after 16 hours of charge. Alternatively, VRPP can be float charged at 1.45V/cell if a faster recharge time is required. This will, however, increase the rate of water loss and reduce the maintenance interval by a factor of two. Temperature compensation may be required as described. 8.2 Charge acceptance The performance data sheets for VRPP are based upon several months floating and so are for fully float charged cells. A discharged cell will take a certain time to achieve this and graph 4 gives the capacity available for the two principal charging voltages recommended fo VRPP, 1.42 V/cell and 1.45 V/cell, during the first 30 hours of charge from a fully discharged state. If the application has a particular recharge time requirement then this must be taken into account when calculating the battery. 9

100 90 80 70 60 50 40 30 20 10 0 0 Available capacity (% of rated capacity) Charging voltage 1.45 Volts per cell Charging voltage 1.42 Volts per cell Current Limit 0.1 C 5 A Temperature 20 C 5 10 15 20 25 30 35 Charge time (hours) Available capacity on float charge from a fully discharged cell Graph 4 8.3 Commissioning requirements 8.3.1 Batteries filled and charged VRPP batteries are normally supplied charged, ready for immediate use and provided they have not been stored for more than six months, they may be put directly into service on float charge. Under these circumstances they should not be given a commissioning charge before putting into service. Batteries stored between six and twelve months should be treated as batteries filled and discharged. 8.3.2 Batteries filled and discharged Batteries in a filled and discharged state require a commissioning charge prior to putting into service. This is a once only operation and is essential to prepare the battery for its long service life. The commissioning charge requires an input of 160% of the rated (C ) capacity before putting the battery 5 into service. Prolonged overcharging is not harmful to VRPP batteries are normally supplied charged but will reduce the initial electrolyte reserve and thus service life without topping up. The following methods of commissioning charge are recommended a. Charge 16 hours at 0.1 C A maximum. 5 b. Charge at 1.65 V/call for 16 hours maximum (0.1 C A current limit) 5 If these recommended methods are not available in practice, then charging may be carried out at lower float voltages for extended periods. 10

9.0 Special operating factors 9.1 Electrical abuse Ripple effects The nickel-cadmium battery is tolerant to high ripple from standard charging systems. VRPP batteries have been tested with voltage ripple values of up to 15% without any effect on water loss. ver discharge If more capacity is drawn out than the rated capacity, the battery is said to be over discharged. This abuse situation should be avoided. In the case of lead acid batteries this will lead to failure of the battery and is unacceptable. The VRPP battery is designed to make recovery from this situation possible. ver charge vercharge of the battery will increase the water loss of the system. In case of VRPP battery, with its generous electrolyte reserve, a small degree of overcharge will not significantly alter the maintenance period. In the case of excessive overcharge, a situation which will immediately destroy a valve regulated lead acid battery, VRPP can be refurbished as described in section 12. 9.2 Mechanical abuse Shock load The VRPP block battery concept has been tested as per IEC 68-2-29 (bump tests at 5 g, 10g and 25 g) and IEC 77 (shock test 3 g). Vibration resistance VRPP cells are tested as per IEC 77 for 2 hours at 1 g. External corrosion VRPP batteries are manufactured in durable polypropylene, all external metal components are nickel-plated and these components are protected by a neutral grease and a rigid plastic cover. 11

10.0 Installation and storage 10.1 Emplacement The HBL NIFE brand VRPP valve regulated recombination battery can be fitted onto stands, can be floor mounted or can be fitted into cabinets. Local standards or codes normally define the mounting arrangements of the batteries, and these must be followed if applicable. However, if this is not the case the following comments can be used as a guide. When the battery is housed in a cubicle or enclosed compartment, it is necessary to provide adequate ventilation depending on utilization. Allow sufficient space over the battery to ensure easy access during assembly. HBL NIFE offers a wide selection of stands to suit most applications. It is desirable to have easy access to all blocks on a stand mounted battery and they should be situated in a readily available position. Distances between stands, and between stands and walls, should be sufficient to give good access to the battery. The overall weight of the battery must be considered and the load bearing on the flooring taken into account in the selection of the battery accommodation. In case of doubt, please contact HBL NIFE for advice. When mounting the battery ensure that the cells are correctly interconnected with the appropriate polarity. The battery connection to load should be with nickel-plated cable lugs. Recommended Torque Cell connection bolt Recommended Torque per pole Nm lbf.in M5 7.5 70 M8 20 M10 30 270 Table 1 To avoid accelerated ageing of the plastic due to UV light, batteries should not be exposed to direct sunlight, UV light sources or strong daylight for prolonged periods. 12

10.2 Ventilation Under normal floating conditions the HBL NIFE VRPP battery gives off up to 10 times less gas than a conventional open cell. Thus the need for ventilation is much reduced and in many cases no special ventilation requirements other than normal room ventilation are required. The quantity of hydorgen given off is given in section 7.8, Gas evolution. However, if the VRPP battery is commissioned in the final location or if the maximum recommended charge current of 0.1 C is used then the quantity of gas given off will be 5 increased. A typical figure for room ventilation is about 2.5 air changes per hour and under such conditions it is satisfactory to install 700 watt hours of battery capacity per cubic meter if the final charge current is at 0.1 C A. 5 Please refer to ventilation standards and requirements applicable in your country or area. Care should also be taken with cubicle installations to ensure sufficient ventilation and battery spacing to prevent overloading and, hence, excess water usage. 10.3 Storage VRPP batteries are normally supplied filled with electrolyte and charged ready for immediate use. They may be stored in this condition for up to twelve months from the date of despatch from HBL NIFE. If batteries are not put into service immediately, they should be stored in a clean, dry cool (+10 C to +30 C) and well ventilated store on open shelves. They should not be exposed to direct sunlight. Before storage ensure that the batteries are clean, with on adequate protective finish, such as an approved neutral grease, on the connectors, and that the flame-aresting low pressure vents remain undisturbed. Batteries filled and charged can be stored for up to one year without any conditioning charge requirement. If they are stored up to six months they should be put directly into service without any commissioning charge. If they have been stored for between six months and one year they should be given and commissioning charge as described. Before putting into service ensure that the batteries are externally clean and with an adequate protective finish, such as an approved neutral grease, on the connectors. If it is necessary to store the batteries for more than one year then they should be given the following conditioning discharge/charge cycle at the end of each year of storage: - Discharge at 0.1 C A to an end of discharge voltage of 1.1 V/cell, where C is the rated 5 5 capacity of the battery - Charge 160% battery s rated capacity at a maximum of 0.1 C A for 16 hours 5 - Return battery to store - Repeat every 12 months Storage at temperatures above +30 C can result in loss of capacity. This can be as much as 5% per 10 C above +30 C. 13

11.0 Maintenance of VRPP batteries in service VRPP Battery requires minimum of attention if properly designed for the application. However, it is good practice with any standby system to carry out a full discharge - charge cycle once per year to make sure that charger, battery and ancillary electronics are functioning correctly. It is recommended that for system servicing, electrolyte levels should be visually checked and ensure that level is above the minimum, battery should be checked for external cleanliness and if necessary clean with damp cloth. If there is evidence that electrolyte has been ejected from vents or that there has been excessive of water this could indicate a charger or system malfunction. Action should be taken to rectify this. 12.0 Refurbishment of VRPP battery Refurbishment of the VRPP battery is recommended when the electrolyte level reached the normal minimum mark on the cell but must be carried out before it reached the warning level on the cell. Batteries operated at float charge rates above 1.42 V/cell will require refurbishment during their operating life. Refurbishing of the VRPP battery is carried out as follows: 1. Disconnect the battery from the load. Remove the terminal cover. 2. With the terminal cover removed, the tops of the individual cells of the VRPP battery will be in view. 3. Confirm that an adequate protective finish remains on glands, poles and connectors. Replenish if necessary. 4. Carefully loosen the flame-arresting low pressure vents to release any gas pressure and then remove each vent completely and retain for refitting. 5. Top-up each cell with distilled or de-ionized water to the specified maximum level. 6. Wipe up any small spillage on cells using a clean cloth. Replace the vents taking care to tighten them correctly i.e., Until resistance against a stop is experienced, and ensure that the seating rubber has not been disturbed out of position. If there is any doubt about the quality of the sealing ring replace with a new vent assembly. 7. Replace the terminal cover. The refurbished VRPP battery is now ready for re-commissioning. 14

VRPP Range Cell dimensions and weight Cell type Capacity at the 5 hr rate (Ah) Cell dimensions in mm Length Width 1.2 V 2.4 V 3.6 V Height Approx weight (1.2V Block) in kgs Container reference Reserve electrolyte cc/cell VRPP 8 8 79 264 1.45 B21-1 90 VRPP 10 10 79 264 1.45 B21-1 90 VRPP 13 13 79 264 1.50 B21-1 90 VRPP 16 16 79 264 1.60 B21-1 90 VRPP 19 19 161 264 1.70 B23-1 145 VRPP 24 24 161 264 2.60 B23-1 145 VRPP 28 28 161 264 2.65 B23-1 145 VRPP 32 32 161 264 2.70 B23-1 145 VRPP 36 36 137 197 264 3.10 B24-1 185 VRPP 40 40 137 197 264 3.20 B24-1 185 VRPP 46 46 137 197 195 349 4.00 B32-1 880 VRPP 50 50 137 197 195 349 4.20 B32-1 880 VRPP 55 55 137 197 195 349 4.20 B32-1 880 VRPP 61 61 137 197 195 349 4.40 B32-1 880 VRPP 78 78 362 195 349 9.20 B31 0 VRPP 82 82 362 195 349 9.40 B31 0 VRPP 88 88 362 195 349 9.70 B31 0 VRPP 92 92 362 195 349 10.1 B31 0 VRPP 96 96 362 195 349 10.5 B31 0 VRPP 362 195 405 11.3 B41 0 VRPP 362 195 405 11.9 B41 0 VRPP 362 195 405 12.5 B41 0 VRPP 362 530 195 349 19.0 B31-2 2520 VRPP 362 530 195 349 19.5 B31-2 2520 VRPP 362 530 195 349 20.0 B31-2 2520 VRPP 362 530 195 349 20.6 B31-2 2520 VRPP 362 530 195 349 20.7 B31-2 2520 VRPP 362 530 195 405 21.9 B41-2 2520 VRPP 362 530 195 405 22.9 B41-2 2520 VRPP 362 530 195 405 24.2 B41-2 2520 VRPP 362 530 195 405 29.7 B41-2 2520 VRPP 264 264 277 195 349 30.3 B31-3 3780 VRPP 276 276 277 195 349 31.1 B31-3 3780 VRPP 292 292 277 195 349 32.6 B31-3 3780 VRPP 277 195 405 33.2 B41-3 3780 VRPP 320 320 277 195 405 34.3 B41-3 3780 VRPP 328 328 277 195 405 34.4 B41-3 3780 VRPP 277 195 405 34.5 B41-3 3780 VRPP 356 356 277 195 405 36.2 B41-3 3780 VRPP 368 368 362 195 349 39.7 B31-4 5040 VRPP 388 388 362 195 349 41.5 B31-4 5040 VRPP 408 408 362 195 405 42.0 B41-4 5040 VRPP 432 432 362 195 405 43.0 B41-4 5040 VRPP 456 456 362 195 405 45.3 B41-4 5040 VRPP 464 464 362 195 405 46.0 B41-4 5040 VRPP 472 472 362 195 405 47.6 B41-4 5040 VRPP 492 492 446 195 405 53.0 B41-5 6295 VRPP 512 512 446 195 405 53.2 B41-5 6295 VRPP 524 524 446 195 405 53.5 B41-5 6295 VRPP 540 540 446 195 405 53.6 B41-5 6295 VRPP 552 552 446 195 405 55.0 B41-5 6295 VRPP 564 564 446 195 405 56.2 B41-5 6295 VRPP 580 580 446 195 405 58.0 B41-5 6295 VRPP 600 600 446 195 405 60.0 B41-5 6295 VRPP 612 612 530 195 405 61.2 B41-6 7555 VRPP 530 195 405 64.8 B41-6 7555 VRPP 680 680 530 195 405 67.3 B41-6 7555 VRPP 712 712 530 195 405 71.2 B41-6 7555 VRPP 744 744 530 195 405 72.8 B41-6 7555 In accordance with its policy of continuous improvement the company reserves the right to change specifications and designs without notice. Illustrations, data, dimensions and weights given in this brochure are for guidance only and cannot be held binding on the company. 15

16 Cell Performance Data Discharge data is for cells after floating at 1.42 Volts Available amperes at 20 C (68 F) fully charged End Voltage 1.00V/cell 10 8 5 3 2 90 60 45 30 10 5 60 30 10 1 Hours Minutes Seconds Cell Type C 5 Ah VRPP 8 VRPP 10 VRPP 13 VRPP 16 VRPP 19 VRPP 24 VRPP 28 VRPP 32 VRPP 36 VRPP 40 VRPP 46 VRPP 50 VRPP 55 VRPP 61 VRPP 78 VRPP 82 VRPP 88 VRPP 92 VRPP 96 VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP 264 VRPP 276 VRPP 292 VRPP VRPP 320 VRPP 328 VRPP VRPP 356 VRPP 368 VRPP 388 VRPP 408 VRPP 432 VRPP 456 VRPP 464 VRPP 472 VRPP 492 VRPP 512 VRPP 524 VRPP 540 VRPP 552 VRPP 564 VRPP 580 VRPP 600 VRPP 612 VRPP VRPP 680 VRPP 712 VRPP 744 8 10 13 16 19 24 28 32 36 40 46 50 55 61 78 82 88 92 96 264 276 292 320 328 356 368 388 408 432 456 464 472 492 512 524 540 552 564 580 600 612 680 712 744 0.82 1.02 1.33 1.63 1.94 2.45 2.86 3.27 3.67 4.08 4.69 5.10 5.61 6.22 7.93 8.34 8.95 9.35 9.76 10.4 11.4 12.2 15.9 16.7 17.7 18.7 19.5 20.7 21.6 23.2 24.4 26.8 28.1 29.7 31.3 32.5 33.3 34.6 36.2 37.4 39.4 41.5 43.9 46.4 47.2 48.0 50.0 52.1 53.3 54.9 56.1 57.3 59.0 61.0 62.2 65.9 69.1 72.4 75.6 1.01 1.27 1.65 2.03 2.41 3.04 3.54 4.05 4.56 5.06 5.82 6.33 6.96 7.72 9.84 10.3 11.1 11.6 12.1 12.9 14.1 15.1 19.7 20.7 22.0 23.2 24.2 25.7 26.8 28.8 30.3 33.3 34.8 36.9 38.9 40.4 41.4 42.9 44.9 46.4 49.0 51.5 54.5 57.6 58.5 59.6 62.1 64.6 66.1 68.2 69.7 71.2 73.2 75.7 77.2 81.8 85.8 89.9 93.9 1.61 2.01 2.61 3.22 3.82 4.83 5.63 6.43 7.24 8.04 9.25 10.1 11.1 12.3 15.6 16.4 17.6 18.4 19.2 20.4 22.4 24.0 31.2 32.8 34.8 36.7 38.3 40.7 42.3 45.5 47.9 52.7 55.1 58.3 61.5 63.9 65.5 67.9 71.1 73.5 77.5 81.5 86.3 91.1 92.7 94.3 98.3 122 136 142 2.57 3.22 4.18 5.14 6.11 7.72 9.00 10.3 11.6 12.9 14.8 16.1 17.7 19.6 25.0 26.3 28.3 29.5 30.8 32.7 36.0 38.5 50.1 52.6 55.9 59.1 61.6 65.5 68.1 73.2 77.0 84.8 88.6 93.7 98.9 114 139 152 158 173 186 196 208 218 229 239 3.78 4.73 6.14 7.56 8.98 11.3 13.2 15.1 17.0 18.9 21.7 23.6 26.0 28.8 37.2 39.1 42.0 43.9 45.8 48.7 53.4 57.3 74.4 78.2 83.0 87.8 91.6 97.3 115 132 139 147 153 162 170 176 185 195 206 218 221 225 235 244 250 258 263 269 277 286 292 309 324 355 4.70 5.87 7.63 9.40 11.2 14.1 16.4 18.8 21.1 23.5 27.0 29.4 32.3 35.8 45.9 48.2 51.8 54.1 56.5 60.0 65.9 70.6 91.8 96.5 155 162 172 188 200 209 216 254 268 273 278 289 301 318 325 332 341 353 360 381 400 419 438 6.12 7.65 9.95 12.2 14.5 18.4 21.4 24.5 27.5 30.6 35.2 38.3 42.1 46.7 59.6 62.7 67.3 70.3 73.4 78.0 85.6 91.7 133 147 162 183 202 211 223 235 245 251 260 272 281 297 312 330 349 355 361 376 391 401 413 422 431 443 459 468 495 520 544 569 6.90 8.62 11.2 13.8 16.4 20.7 24.1 27.6 31.0 34.5 39.7 43.1 47.4 52.6 67.5 71.0 76.2 79.7 83.1 88.3 97.0 142 151 159 166 197 208 229 239 253 267 277 284 294 319 336 353 374 395 402 409 426 443 454 468 478 488 502 519 530 561 589 616 644 10.9 13.6 17.7 21.8 25.9 32.7 38.1 43.5 49.0 54.4 62.6 68.0 74.8 83.0 122 127 148 159 206 217 230 243 254 270 280 302 317 349 365 386 407 423 434 450 471 487 513 540 571 603 614 624 651 677 693 714 730 746 767 794 810 857 899 942 984 12.3 15.3 19.9 24.5 29.1 36.8 42.9 49.0 55.1 61.3 70.4 76.6 84.2 93.4 124 130 136 158 169 220 232 246 260 271 288 299 322 339 373 390 412 435 452 463 480 503 520 548 576 610 644 655 667 695 723 740 763 780 797 819 847 864 915 960 1006 1 16.2 20.2 26.3 32.3 38.4 48.5 56.6 64.6 72.7 80.8 92.9 111 142 153 160 167 194 208 271 285 302 319 333 354 368 396 417 458 479 507 535 556 569 590 618 639 674 708 750 792 806 819 854 889 910 938 958 979 1007 2 3 5 1 6 2 17.9 22.3 29.0 35.7 42.4 53.6 62.5 71.4 80.4 89.3 136 147 155 166 227 295 310 329 348 363 386 401 431 454 499 522 552 582 605 620 643 673 696 733 771 817 862 877 892 930 968 991 1 3 6 6 4 1157 1225 5 6 1406 21.1 26.3 34.2 42.1 50.0 63.2 73.7 84.2 94.7 132 145 161 190 198 207 220 241 259 336 353 375 397 414 440 457 491 517 569 595 629 664 690 707 733 767 793 836 879 931 983 1000 7 0 3 9 1 0 6 0 3 9 1397 6 1534 1603 25.6 31.9 41.5 51.1 60.7 76.7 89.5 115 147 160 176 195 196 206 221 231 241 256 281 302 392 412 437 462 482 513 533 573 603 663 693 734 774 804 824 854 894 925 975 5 5 1 6 6 6 6 7 7 7 7 1457 1508 1538 1628 1709 1789 1869 7.99 10.0 13.0 16.0 19.0 24.0 28.0 32.0 36.0 40.0 46.0 50.0 54.9 60.9 77.8 81.8 87.7 91.7 95.7 173 183 191 203 211 227 239 263 275 291 307 319 327 339 355 367 387 407 431 455 463 471 491 510 522 538 550 562 578 598 610 646 678 710 742

17 Cell Performance Data Discharge data is for cells after floating at 1.42 Volts Available amperes at 20 C (68 F) fully charged End Voltage 1.05V/cell 10 8 5 3 2 90 60 45 30 10 5 60 30 10 1 Hours Minutes Seconds Cell Type C 5 Ah VRPP 8 VRPP 10 VRPP 13 VRPP 16 VRPP 19 VRPP 24 VRPP 28 VRPP 32 VRPP 36 VRPP 40 VRPP 46 VRPP 50 VRPP 55 VRPP 61 VRPP 78 VRPP 82 VRPP 88 VRPP 92 VRPP 96 VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP 264 VRPP 276 VRPP 292 VRPP VRPP 320 VRPP 328 VRPP VRPP 356 VRPP 368 VRPP 388 VRPP 408 VRPP 432 VRPP 456 VRPP 464 VRPP 472 VRPP 492 VRPP 512 VRPP 524 VRPP 540 VRPP 552 VRPP 564 VRPP 580 VRPP 600 VRPP 612 VRPP VRPP 680 VRPP 712 VRPP 744 8 10 13 16 19 24 28 32 36 40 46 50 55 61 78 82 88 92 96 264 276 292 320 328 356 368 388 408 432 456 464 472 492 512 524 540 552 564 580 600 612 680 712 744 0.81 1.02 1.32 1.62 1.93 2.44 2.84 3.25 3.65 4.06 4.67 5.08 5.58 6.19 7.85 8.25 8.85 9.25 9.66 10.3 11.3 12.1 15.7 16.5 17.5 18.5 19.3 20.5 21.3 22.9 24.1 26.6 27.8 29.4 31.0 32.2 33.0 34.2 35.8 37.0 39.0 41.0 43.5 45.9 46.7 47.5 49.5 51.5 52.7 54.3 55.5 56.7 58.3 60.4 61.6 65.2 68.4 71.6 74.8 1.01 1.26 1.64 2.02 2.39 3.02 3.53 4.03 4.54 5.04 5.80 6.30 6.93 7.69 9.74 10.2 11.0 11.5 12.0 12.7 14.0 15.0 19.5 20.5 21.7 23.0 24.0 25.5 26.5 28.5 30.0 33.0 34.5 36.5 38.5 40.0 41.0 42.5 44.4 45.9 48.4 50.9 53.9 56.9 57.9 58.9 61.4 63.9 65.4 67.4 68.9 70.4 72.4 74.9 76.4 80.9 84.9 88.9 92.9 1.58 1.97 2.57 3.16 3.75 4.74 5.53 6.32 7.11 7.90 9.08 9.87 10.9 12.0 15.5 16.3 17.5 18.3 19.1 20.2 22.2 23.8 31.0 32.6 34.5 36.5 38.1 40.5 42.1 45.3 47.6 52.4 54.8 58.0 61.1 63.5 65.1 67.5 70.7 73.0 77.0 81.0 85.7 90.5 92.1 93.7 97.7 115 148 2.53 3.17 4.12 5.07 6.02 7.60 8.87 10.1 11.4 12.7 14.6 15.8 17.4 19.3 25.0 26.3 28.3 29.5 30.8 32.7 36.0 38.5 50.1 52.6 55.9 59.1 61.6 65.5 68.1 73.2 77.0 84.8 88.6 93.7 98.9 114 139 152 158 173 186 196 208 218 229 239 3.54 4.42 5.75 7.08 8.41 10.6 12.4 14.2 15.9 17.7 20.4 22.1 24.3 27.0 35.8 37.6 40.3 42.2 44.0 46.8 51.4 55.0 71.5 75.2 79.8 84.4 88.0 93.5 97.2 127 147 150 163 169 178 187 198 209 213 216 226 235 248 253 259 266 275 281 297 312 326 341 4.34 5.42 7.05 8.67 10.3 13.0 15.2 17.3 19.5 21.7 24.9 27.1 29.8 33.1 42.0 44.2 47.4 49.6 51.8 55.0 60.4 64.7 84.1 88.4 93.8 99.2 114 142 157 166 173 183 198 209 220 233 246 250 254 265 276 282 291 298 304 313 323 330 349 367 384 401 5.44 6.80 8.84 10.9 12.9 16.3 19.0 21.8 24.5 27.2 31.3 34.0 37.4 41.5 50.8 53.5 57.4 60.0 62.6 66.5 73.0 78.2 133 172 190 209 214 222 232 253 266 282 297 302 321 334 342 352 360 368 378 391 399 422 443 464 485 5.90 7.38 9.59 11.8 14.0 17.7 20.7 23.7 26.6 29.6 34.1 37.0 40.7 45.2 56.8 59.7 64.0 67.0 69.9 74.2 81.5 87.3 114 127 140 148 154 166 175 213 224 233 239 247 259 268 282 297 314 332 338 344 358 373 381 393 402 410 422 437 445 472 495 518 541 8.50 10.6 13.8 17.0 20.2 25.5 29.8 34.0 38.3 42.5 48.9 53.1 58.4 64.8 82.2 86.4 92.7 96.9 173 183 194 202 215 223 253 278 291 325 337 346 358 375 388 409 430 455 481 489 497 518 540 552 569 582 594 611 632 645 683 717 750 784 9.86 12.3 16.0 19.7 23.4 29.6 34.5 39.5 44.4 49.3 56.7 61.7 67.8 75.2 91.5 96.2 183 216 225 239 249 268 282 310 324 343 362 376 385 399 418 432 455 479 507 535 545 554 577 601 615 634 662 681 704 718 761 798 836 873 13.3 16.6 21.6 26.5 31.5 39.8 46.7 53.1 59.7 66.3 76.3 82.9 91.2 117 132 153 234 246 260 275 287 305 317 341 359 395 413 437 461 479 491 509 533 551 581 611 647 683 695 707 737 766 784 808 826 844 868 898 916 970 8 6 1114 15.0 18.7 24.3 29.9 35.5 44.9 52.3 59.8 67.3 74.8 86.0 93.5 114 132 148 154 250 263 279 295 327 366 385 424 443 469 494 514 526 546 571 591 623 655 693 732 745 758 790 822 841 867 886 905 931 963 982 0 1 1143 4 17.6 22.0 28.6 35.2 41.6 52.6 61.3 70.0 78.8 87.7 140 147 158 173 183 216 281 295 313 331 345 367 381 410 432 475 496 525 554 576 590 612 640 662 698 734 777 820 835 849 885 921 942 971 993 4 3 9 1 5 1223 1 1338 22.1 27.6 35.9 44.2 52.5 66.3 77.3 88.4 99.4 127 152 169 172 214 235 252 327 344 365 386 403 428 444 478 503 553 579 612 646 671 688 713 746 771 813 855 906 956 973 990 1 3 9 2 1157 2 6 8 3 8 1426 3 0 6.46 8.08 10.5 12.9 15.3 19.4 22.6 25.8 29.1 32.3 37.2 40.4 44.4 49.3 65.5 68.8 73.9 77.2 80.6 85.6 94.0 154 161 171 178 191 202 222 232 245 259 269 275 285 299 309 326 343 363 383 390 396 413 430 440 453 463 474 487 504 514 544 571 598 625

Cell Performance Data Available amperes at 20 C (68 F) fully charged End Voltage 1.10V/cell Cell Type C 5 Ah Hours Minutes Seconds 10 8 5 3 2 90 60 45 30 10 5 60 30 10 1 VRPP 8 VRPP 10 VRPP 13 VRPP 16 VRPP 19 VRPP 24 VRPP 28 VRPP 32 VRPP 36 VRPP 40 VRPP 46 VRPP 50 VRPP 55 VRPP 61 VRPP 78 VRPP 82 VRPP 88 VRPP 92 VRPP 96 VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP 264 VRPP 276 VRPP 292 VRPP VRPP 320 VRPP 328 VRPP VRPP 356 VRPP 368 VRPP 388 VRPP 408 VRPP 432 VRPP 456 VRPP 464 VRPP 472 VRPP 492 VRPP 512 VRPP 524 VRPP 540 VRPP 552 VRPP 564 VRPP 580 VRPP 600 VRPP 612 VRPP 680 VRPP 712 680 VRPP 744 712 VRPP 744 8 10 13 16 19 24 28 32 36 40 46 50 55 61 78 82 88 92 96 264 276 292 320 328 356 368 388 408 432 456 464 472 492 512 524 540 552 564 580 600 612 680 712 744 0.80 1.00 1.31 1.61 1.91 2.41 2.81 3.22 3.62 4.02 4.62 5.02 5.53 6.13 7.78 8.18 8.77 9.17 9.57 10.2 11.2 12.0 15.6 16.4 17.3 18.3 19.1 20.3 21.1 22.7 23.9 26.3 27.5 29.1 30.7 31.9 32.7 33.9 35.5 36.7 38.7 40.7 43.1 45.5 46.3 47.1 49.1 51.0 52.2 53.8 55.0 56.2 57.8 59.8 61.0 64.6 67.8 71.0 74.2 1.00 1.25 1.62 2.00 2.37 2.99 3.49 3.99 4.49 4.99 5.74 6.24 6.86 7.61 9.65 10.1 10.9 11.4 11.9 12.6 13.9 14.9 19.3 20.3 21.5 22.8 23.8 25.2 26.2 28.2 29.7 32.7 34.2 36.1 38.1 39.6 40.6 42.1 44.1 45.5 48.0 50.5 53.5 56.4 57.4 58.4 60.9 63.4 64.9 66.8 68.3 69.8 71.8 74.3 75.7 80.2 84.2 88.1 92.1 1.55 1.94 2.52 3.10 3.68 4.65 5.43 6.20 6.98 7.75 8.92 9.69 10.7 11.8 15.1 15.9 17.1 17.8 18.6 19.8 21.7 23.3 30.3 31.8 33.8 35.7 37.2 39.6 41.1 44.2 46.6 51.2 53.5 56.6 59.7 62.1 63.6 66.0 69.1 71.4 75.3 79.1 83.8 88.5 90.0 91.6 95.4 99.3 132 2.28 2.84 3.70 4.55 5.40 6.83 7.96 9.10 10.3 11.4 13.1 14.3 15.7 17.4 25.1 26.4 28.3 29.6 30.9 32.8 36.0 38.6 50.2 52.7 55.9 59.2 61.7 65.6 68.2 73.3 77.2 84.9 88.7 93.9 99.0 114 139 147 152 158 186 197 208 219 229 239 2.97 3.71 4.83 5.94 7.05 8.91 10.4 11.9 13.4 14.8 17.1 18.6 20.4 22.6 31.9 33.5 36.0 37.6 39.3 41.7 45.8 49.1 63.8 67.1 71.2 75.3 78.5 83.4 86.7 93.3 98.2 139 151 159 167 187 190 209 214 221 226 231 237 245 250 265 278 291 304 3.51 4.39 5.70 7.02 8.34 10.5 12.3 14.0 15.8 17.6 20.2 21.9 24.1 26.8 36.8 38.7 41.5 43.4 45.3 48.1 52.8 56.6 73.6 77.4 82.1 86.8 90.6 96.2 100 130 145 151 155 160 183 215 219 223 232 242 247 255 260 266 274 283 289 306 321 336 351 4.42 5.52 7.18 8.84 10.5 13.3 15.5 17.7 19.9 22.1 25.4 27.6 30.4 33.7 43.0 45.2 48.5 50.7 53.0 56.3 61.8 66.2 86.0 90.5 96.0 117 132 152 161 170 188 196 203 214 225 238 252 256 260 271 282 289 298 304 311 320 331 338 357 375 393 410 4.78 5.97 7.76 9.55 11.3 14.3 16.7 19.1 21.5 23.9 27.5 29.9 32.8 36.4 47.0 49.4 53.0 55.4 57.8 61.4 67.5 72.3 94.0 98.8 111 137 145 159 166 176 186 198 205 214 222 234 246 260 275 280 284 296 316 325 333 349 361 369 390 410 429 448 5.27 6.59 8.56 10.5 12.5 15.8 18.4 21.1 23.7 26.4 30.3 32.9 36.2 40.2 51.8 54.5 58.5 61.1 63.8 67.8 74.4 79.7 122 136 151 159 175 183 194 205 213 218 226 237 245 258 271 287 303 314 327 348 359 367 375 385 399 407 431 452 473 494 6.48 8.10 10.5 13.0 15.4 19.4 22.7 25.9 29.1 32.4 37.2 40.5 44.5 49.4 64.0 67.3 72.2 75.5 78.8 83.7 92.0 98.5 143 151 158 167 187 197 217 227 253 263 269 279 292 302 319 335 355 374 381 388 404 420 430 443 453 463 476 493 502 532 558 585 611 7.56 9.45 12.3 15.1 18.0 22.7 26.5 30.3 34.0 37.8 43.5 47.3 52.0 57.7 71.0 74.6 80.1 83.7 87.4 92.8 142 158 167 175 186 207 218 251 266 280 291 298 309 324 335 353 371 393 415 422 429 448 466 477 491 502 513 528 546 557 590 619 677 10.5 13.2 17.1 21.1 25.0 31.6 36.9 42.2 47.4 52.7 60.6 65.9 72.5 80.4 90.1 96.2 183 216 225 239 249 268 282 310 324 343 362 376 385 399 418 432 455 479 507 535 545 554 577 601 615 634 662 681 704 718 761 798 836 873 11.9 14.9 19.3 23.8 28.3 35.7 41.7 47.6 53.6 59.5 68.5 74.4 81.8 90.8 115 133 157 214 227 251 266 277 298 313 345 360 381 402 418 428 444 465 480 507 533 564 595 606 616 642 668 684 705 721 736 757 783 799 846 888 930 971 14.1 17.6 22.9 28.2 33.5 42.3 49.4 56.4 63.5 70.5 81.1 88.2 97.0 127 132 147 161 173 224 236 250 265 276 294 305 328 345 380 397 420 443 460 472 489 512 529 558 587 622 656 668 679 708 737 754 777 794 812 835 863 881 932 978 4 1 17.9 22.3 29.0 35.7 42.4 53.6 62.5 71.4 80.4 89.3 136 122 150 160 176 188 245 257 273 288 301 320 332 357 376 414 433 458 483 502 514 533 558 577 608 639 677 715 727 740 771 803 821 846 865 884 909 940 959 6 6 1 6 Discharge data is for cells after floating at 1.42 Volts 18

Cell Performance Data Available amperes at 20 C (68 F) fully charged End Voltage 1.14V/cell Cell Type C 5 Ah Hours Minutes Seconds 10 8 5 3 2 90 60 45 30 10 5 60 30 10 1 VRPP 8 VRPP 10 VRPP 13 VRPP 16 VRPP 19 VRPP 24 VRPP 28 VRPP 32 VRPP 36 VRPP 40 VRPP 46 VRPP 50 VRPP 55 VRPP 61 VRPP 78 VRPP 82 VRPP 88 VRPP 92 VRPP 96 VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP 264 VRPP 276 VRPP 292 VRPP VRPP 320 VRPP 328 VRPP VRPP 356 VRPP 368 VRPP 388 VRPP 408 VRPP 432 VRPP 456 VRPP 464 VRPP 472 VRPP 492 VRPP 512 VRPP 524 VRPP 540 VRPP 552 VRPP 564 VRPP 580 VRPP 600 VRPP 612 VRPP 680 VRPP 712 680 VRPP 744 712 VRPP 744 8 10 13 16 19 24 28 32 36 40 46 50 55 61 78 82 88 92 96 264 276 292 320 328 356 368 388 408 432 456 464 472 492 512 524 540 552 564 580 600 612 680 712 744 0.77 0.96 1.25 1.57 1.82 2.30 2.69 3.07 3.46 3.92 4.51 4.90 5.39 5.98 7.59 7.98 8.56 8.95 9.34 9.92 10.9 11.7 15.2 16.0 16.9 17.9 18.7 19.8 20.6 22.2 23.3 25.7 26.8 28.4 30.0 31.1 31.9 33.1 34.6 35.8 37.7 39.7 42.0 44.4 45.1 45.9 47.9 49.8 51.0 52.5 53.7 54.9 56.4 58.4 59.5 63.0 66.1 69.3 72.4 0.95 1.19 1.55 1.91 2.26 2.86 3.34 3.81 4.29 4.77 5.48 5.96 6.55 7.27 9.37 9.85 10.6 11.0 11.5 12.2 13.5 14.4 18.7 19.7 20.9 22.1 23.1 24.5 25.5 27.4 28.8 31.7 33.1 35.1 37.0 38.4 39.4 40.8 42.8 44.2 46.6 49.0 51.9 54.8 55.7 56.7 59.1 61.5 62.9 64.8 66.3 67.7 69.7 72.1 73.5 77.8 81.7 85.5 89.3 1.52 1.90 2.47 3.04 3.61 4.57 5.33 6.09 6.85 7.61 8.75 9.51 10.5 11.6 14.8 15.6 16.7 17.5 18.2 19.4 21.3 22.8 29.6 31.1 33.0 34.9 36.5 38.7 40.3 43.3 45.6 50.1 52.4 55.5 58.5 60.8 62.3 64.6 67.6 69.9 73.7 77.5 82.1 86.6 88.1 89.6 93.4 97.2 100 114 1.97 2.47 3.21 3.95 4.69 5.92 6.91 7.89 8.88 9.86 11.3 12.3 13.6 15.0 20.3 21.4 22.9 24.0 25.0 26.6 29.2 31.3 40.6 42.7 45.3 47.9 50.0 53.2 55.2 59.4 62.5 68.8 71.9 76.1 80.3 83.4 85.5 88.6 92.8 95.9 133 137 147 151 159 169 186 194 2.40 3.00 3.90 4.80 5.71 7.21 8.41 9.61 10.8 12.0 13.8 15.0 16.5 18.3 24.2 25.4 27.3 28.5 29.7 31.6 34.7 34.7 48.3 50.8 53.9 57.0 59.5 63.2 65.7 70.7 74.4 81.8 85.5 90.5 95.4 99.2 114 152 159 162 167 171 175 186 190 211 221 231 2.75 3.43 4.46 5.49 6.52 8.24 9.61 11.0 12.4 13.7 15.8 17.2 18.9 20.9 26.0 27.3 29.3 30.7 32.0 34.0 37.3 40.0 52.0 54.7 58.0 61.3 64.0 68.0 70.7 76.0 80.0 88.0 92.0 97.3 136 152 155 157 170 175 188 200 216 227 237 248 3.37 4.21 5.47 6.73 7.99 10.1 11.8 13.5 15.1 16.8 19.4 21.0 23.1 25.7 29.8 31.3 33.6 35.2 36.7 39.0 42.8 45.9 59.6 62.7 66.5 70.3 73.4 78.0 81.0 87.2 91.7 122 130 136 148 188 196 200 206 211 216 222 229 234 248 260 272 284 3.67 4.59 5.96 7.34 8.72 11.0 12.8 14.7 16.5 18.3 21.1 22.9 25.2 28.0 31.3 32.9 35.3 36.9 38.5 40.9 44.9 48.2 62.6 65.8 69.8 73.8 77.0 81.9 85.1 91.5 96.3 111 117 124 132 136 143 148 173 183 186 189 197 205 210 217 222 226 233 241 246 260 273 286 299 4.08 5.10 6.63 8.16 9.69 12.2 14.3 16.3 18.4 20.4 23.5 25.5 28.0 31.1 36.2 38.0 40.8 42.7 44.5 47.3 51.9 55.7 72.4 76.1 80.7 85.3 89.1 94.6 98.3 111 122 143 148 152 158 171 189 200 215 219 237 243 250 256 262 269 278 284 301 315 330 345 5.30 6.63 8.61 10.5 12.5 15.8 18.4 21.1 23.7 26.4 28.2 30.7 33.8 37.4 45.9 48.2 51.8 54.1 56.5 60.0 65.9 70.6 91.8 96.5 155 162 172 188 200 209 216 254 268 273 278 289 301 318 325 332 341 353 360 381 400 419 438 6.15 7.69 10.0 12.3 14.6 18.5 21.5 24.6 27.7 30.8 35.4 38.5 42.3 46.9 53.2 56.0 60.1 62.8 65.5 69.6 76.5 81.9 139 145 188 199 210 218 224 232 243 251 265 278 295 311 317 322 336 349 358 369 377 385 396 410 418 442 464 486 508 8.33 10.4 13.5 16.7 19.8 25.0 29.2 33.3 37.5 41.7 47.9 52.1 57.3 63.5 69.1 72.6 77.9 81.5 85.0 90.3 99.2 145 154 163 170 188 202 213 234 244 259 273 283 291 301 315 326 344 361 383 404 411 418 436 453 464 478 489 500 514 531 542 574 602 631 659 9.69 12.1 15.7 19.4 23.0 29.1 33.9 38.8 43.6 48.5 55.7 60.5 66.6 73.8 74.7 78.5 84.3 88.1 92.0 97.7 115 157 167 176 195 203 218 230 253 264 280 295 307 314 326 341 352 372 391 414 437 444 452 471 490 502 517 529 540 556 575 586 621 651 682 713 11.6 14.5 18.8 23.1 27.5 34.7 40.5 46.2 52.0 57.8 66.5 72.3 79.5 88.2 84.0 88.3 94.7 99.0 187 198 207 220 245 258 284 297 314 332 344 353 366 383 396 418 439 465 491 499 508 530 551 564 581 594 607 624 646 659 698 732 766 801 15.1 18.9 24.6 30.3 35.9 45.4 52.9 60.5 68.1 75.6 87.0 94.5 115 95.2 100 117 137 147 190 200 225 234 249 259 278 293 322 337 357 376 391 400 415 435 449 474 498 527 557 567 576 601 625 640 659 674 689 708 733 747 791 830 869 908 Discharge data is for cells after floating at 1.42 Volts 19

Cell Performance Data Available Watts at 20 C (68 F) fully charged End Voltage 1.00V/cell Cell Type C 5 Ah Hours Minutes Seconds 10 8 5 3 2 90 60 45 30 10 5 60 30 10 1 VRPP 8 VRPP 10 VRPP 13 VRPP 16 VRPP 19 VRPP 24 VRPP 28 VRPP 32 VRPP 36 VRPP 40 VRPP 46 VRPP 50 VRPP 55 VRPP 61 VRPP 78 VRPP 82 VRPP 88 VRPP 92 VRPP 96 VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP 264 VRPP 276 VRPP 292 VRPP VRPP 320 VRPP 328 VRPP VRPP 356 VRPP 368 VRPP 388 VRPP 408 VRPP 432 VRPP 456 VRPP 464 VRPP 472 VRPP 492 VRPP 512 VRPP 524 VRPP 540 VRPP 552 VRPP 564 VRPP 580 VRPP 600 VRPP 612 VRPP VRPP 680 VRPP 712 VRPP 744 8 10 13 16 19 24 28 32 36 40 46 50 55 61 78 82 88 92 96 264 276 292 320 328 356 368 388 408 432 456 464 472 492 512 524 540 552 564 580 600 612 680 712 744 0.93 1.17 1.52 1.87 2.22 2.80 3.27 3.74 4.21 4.67 5.37 5.84 6.43 7.13 9.08 9.55 10.2 10.7 11.2 11.9 13.0 14.0 18.2 19.1 20.3 21.4 22.4 23.7 24.7 26.5 27.9 30.7 32.1 34.0 35.9 37.3 38.2 39.6 41.4 42.8 45.2 47.5 50.3 53.1 54.0 54.9 57.3 59.6 61.0 62.9 64.3 65.7 67.5 69.8 71.2 75.4 79.2 82.9 86.6 1.16 1.45 1.88 2.32 2.75 3.48 4.06 4.64 5.22 5.80 6.67 7.25 7.97 8.84 11.3 11.9 12.7 13.3 13.9 14.7 16.2 17.3 22.5 23.7 25.1 26.6 27.7 29.5 30.6 32.9 34.7 38.2 39.9 42.2 44.5 46.2 47.4 49.1 51.4 53.2 56.1 59.0 62.4 65.9 66.9 68.2 71.1 74.0 75.7 78.0 79.8 81.5 83.8 86.7 88.4 93.6 98.3 1.84 2.30 2.99 3.68 4.37 5.52 6.45 7.37 8.29 9.21 10.6 11.5 12.7 14.0 17.8 18.8 20.1 21.0 22.0 23.3 25.6 27.4 35.5 37.5 39.8 42.1 43.9 46.7 48.5 52.1 54.9 60.4 63.1 66.8 70.4 73.2 75.0 77.8 81.4 84.2 88.7 93.3 98.9 117 133 137 140 148 163 170 2.95 3.68 4.79 5.89 7.00 8.84 10.3 11.8 13.3 14.7 16.9 18.4 20.2 22.5 28.7 30.1 32.3 33.8 35.3 37.5 41.2 44.1 57.3 60.3 64.0 67.6 70.6 75.0 77.9 83.8 88.2 97.0 143 150 159 171 173 188 198 203 207 213 221 225 238 250 262 273 4.33 5.41 7.03 8.66 10.3 13.0 15.2 17.3 19.5 21.6 24.9 27.1 29.8 33.0 42.6 44.8 48.1 50.3 52.4 55.7 61.2 65.6 85.2 89.6 95.1 111 151 160 175 179 186 194 223 236 249 253 258 269 280 286 295 302 317 328 334 354 371 389 406 5.38 6.72 8.74 10.8 12.8 16.1 18.8 21.5 24.2 26.9 30.9 33.6 37.0 41.0 52.5 55.2 59.3 62.0 64.7 68.7 75.4 80.8 117 124 137 143 154 162 178 186 197 207 216 221 229 248 261 275 291 307 313 318 331 345 353 364 372 380 391 404 412 436 458 480 501 7.01 8.76 11.4 14.0 16.6 21.0 24.5 28.0 31.5 35.0 40.3 43.8 48.2 53.4 68.3 71.8 77.0 80.5 84.0 89.3 98.0 137 152 161 179 186 200 210 231 242 256 270 280 287 298 312 322 357 378 399 406 413 431 448 459 473 483 494 508 525 536 567 595 623 651 7.90 9.87 12.8 15.8 18.8 23.7 27.6 31.6 35.5 39.5 45.4 49.4 54.3 60.2 77.3 81.3 87.2 91.2 95.2 111 155 163 172 182 190 202 210 226 238 262 274 289 305 317 325 337 353 365 385 404 428 452 460 468 488 508 519 535 547 559 575 595 607 642 674 706 738 9.15 11.4 14.9 18.3 21.7 27.5 32.0 36.6 41.2 45.8 52.6 57.2 62.9 69.8 89.0 93.6 100 137 178 187 199 210 219 233 242 260 274 301 315 333 352 365 374 388 406 420 443 466 493 521 530 539 562 584 598 616 630 644 662 685 699 740 776 813 849 12.5 15.6 20.3 24.9 29.6 37.4 43.6 49.9 56.1 62.3 71.7 77.9 85.7 95.0 124 133 139 145 154 170 182 236 248 264 279 291 309 321 345 363 400 418 442 466 485 497 515 539 557 588 618 654 691 703 715 745 775 794 818 836 854 878 909 927 981 0 8 7 14.0 17.5 22.8 28.1 33.3 42.1 49.1 56.1 63.1 70.1 80.7 87.7 96.4 133 142 155 194 252 265 281 298 311 330 343 369 388 427 446 472 498 518 530 550 576 595 627 660 699 737 750 763 796 828 847 873 893 912 938 970 990 8 0 1151 3 18.5 23.1 30.1 37.0 43.9 55.5 64.8 74.0 83.3 92.5 127 155 163 175 183 191 203 223 239 310 326 346 366 382 406 421 453 477 525 549 580 612 636 652 676 708 732 771 811 859 906 922 938 978 8 2 3 7 1 1153 1 7 8 2 5 1479 20.4 25.6 33.2 40.9 48.6 61.3 71.6 81.8 92.0 169 190 199 208 221 242 260 338 355 377 398 416 442 459 493 519 571 597 632 667 693 710 736 771 797 840 883 935 987 1004 2 5 1 4 9 5 1221 5 9 1325 1403 1472 1541 1610 24.1 30.1 39.2 48.2 57.3 72.3 84.4 96.4 139 151 166 202 217 227 237 252 276 296 385 405 429 454 474 503 523 563 592 651 681 721 760 790 809 839 878 908 957 1007 6 5 1145 5 4 3 3 1333 1362 1392 1431 1481 1510 1599 1678 1757 1836 29.3 36.6 47.6 58.5 69.5 87.8 117 132 183 223 224 236 253 265 276 293 322 345 449 472 501 529 552 587 610 656 690 759 794 840 886 921 944 978 4 9 1 1 1243 2 1335 8 5 1473 1507 1554 1588 1623 1669 1726 1761 1864 1956 8 2140 Discharge data is for cells after floating at 1.42 Volts 20

Cell Performance Data Available Watts at 20 C (68 F) fully charged End Voltage 1.05V/cell Cell Type C 5 Ah Hours Minutes Seconds 10 8 5 3 2 90 60 45 30 10 5 60 30 10 1 VRPP 8 VRPP 10 VRPP 13 VRPP 16 VRPP 19 VRPP 24 VRPP 28 VRPP 32 VRPP 36 VRPP 40 VRPP 46 VRPP 50 VRPP 55 VRPP 61 VRPP 78 VRPP 82 VRPP 88 VRPP 92 VRPP 96 VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP 264 VRPP 276 VRPP 292 VRPP VRPP 320 VRPP 328 VRPP VRPP 356 VRPP 368 VRPP 388 VRPP 408 VRPP 432 VRPP 456 VRPP 464 VRPP 472 VRPP 492 VRPP 512 VRPP 524 VRPP 540 VRPP 552 VRPP 564 VRPP 580 VRPP 600 VRPP 612 VRPP VRPP 680 VRPP 712 VRPP 744 8 10 13 16 19 24 28 32 36 40 46 50 55 61 78 82 88 92 96 264 276 292 320 328 356 368 388 408 432 456 464 472 492 512 524 540 552 564 580 600 612 680 712 744 0.95 1.19 1.54 1.90 2.26 2.85 3.33 3.80 4.28 4.75 5.46 5.94 6.53 7.24 9.18 9.65 10.4 10.8 11.3 12.0 13.2 14.1 18.4 19.3 20.5 21.7 22.6 24.0 24.9 26.8 28.2 31.1 32.5 34.4 36.2 37.7 38.6 40.0 41.9 43.3 45.7 48.0 50.8 53.7 54.6 55.5 57.9 60.3 61.7 63.5 65.0 66.4 68.3 70.6 72.0 76.3 80.0 83.8 87.6 1.18 1.47 1.92 2.36 2.80 3.54 4.13 4.72 5.31 5.90 6.78 7.37 8.11 8.99 11.4 12.0 12.9 13.4 14.0 14.9 16.4 17.5 22.8 24.0 25.4 26.9 28.0 29.8 31.0 33.3 35.1 38.6 40.3 42.7 45.0 46.7 47.9 49.7 52.0 53.8 56.7 59.6 63.1 66.6 67.8 69.0 71.9 74.8 76.5 78.9 80.6 82.4 84.7 87.7 89.4 94.7 99.3 1.85 2.31 3.00 3.70 4.39 5.54 6.47 7.39 8.32 9.24 10.6 11.5 12.7 14.1 18.1 19.0 20.4 21.4 22.3 23.7 26.0 27.9 36.2 38.1 40.4 42.7 44.6 47.4 49.2 52.9 55.7 61.3 64.1 67.8 71.5 74.3 76.2 79.0 82.7 85.5 90.1 94.8 100 114 122 139 142 150 158 173 2.96 3.71 4.82 5.93 7.04 8.89 10.4 11.9 13.3 14.8 17.0 18.5 20.4 22.6 29.3 30.8 33.1 34.6 36.1 38.3 42.1 45.1 58.6 61.6 65.4 69.1 72.1 76.6 79.6 85.6 90.1 99.2 153 162 171 185 197 203 207 218 225 230 243 255 267 279 4.14 5.18 6.73 8.28 9.84 12.4 14.5 16.6 18.6 20.7 23.8 25.9 28.5 31.6 41.8 44.0 47.2 49.4 51.5 54.7 60.1 64.4 83.7 88.0 93.3 98.7 114 122 142 148 157 172 176 182 191 197 208 219 232 245 249 253 264 275 281 290 296 303 311 322 328 348 365 382 399 5.07 6.34 8.24 10.1 12.0 15.2 17.8 20.3 22.8 25.4 29.2 31.7 34.9 38.7 49.2 51.7 55.5 58.0 60.5 64.3 70.6 75.7 98.4 151 167 194 202 207 214 225 232 245 257 272 288 293 298 310 323 331 341 348 356 366 378 386 409 429 449 469 6.36 7.95 10.3 12.7 15.1 19.1 22.3 25.5 28.6 31.8 36.6 39.8 43.7 48.5 59.5 62.5 67.1 70.2 73.2 77.8 85.4 91.5 133 140 162 183 211 223 235 244 250 259 272 281 296 311 329 348 354 360 375 391 400 412 421 430 442 458 467 494 519 543 567 6.91 8.63 11.2 13.8 16.4 20.7 24.2 27.7 31.1 34.7 39.9 43.3 47.7 52.9 66.4 69.8 74.9 78.3 81.7 86.9 95.4 133 140 148 157 163 194 225 235 249 262 272 279 290 303 313 330 347 368 388 395 402 419 436 446 460 470 480 494 511 521 552 579 606 634 7.56 9.45 12.3 15.1 18.0 22.7 26.5 30.2 34.0 37.8 43.5 47.3 52.0 57.6 76.6 80.6 86.4 90.4 94.3 100 153 161 171 189 200 208 224 236 259 271 287 303 314 322 334 350 362 381 401 424 448 456 464 483 503 515 530 542 554 570 589 601 637 668 699 731 9.95 12.4 16.2 19.9 23.6 29.8 34.8 39.8 44.8 49.7 57.2 62.2 68.4 75.8 96.2 148 202 215 227 237 252 261 281 296 325 360 380 395 404 419 439 454 478 503 533 562 572 582 607 631 646 666 681 695 715 740 755 799 838 878 917 11.5 14.4 18.8 23.1 27.4 34.6 40.4 46.2 51.9 57.7 66.4 72.1 79.3 88.0 132 140 154 214 225 239 253 264 280 291 313 330 363 379 401 423 439 450 467 489 505 533 560 593 626 637 676 703 720 742 758 775 796 824 840 890 934 978 2 15.5 19.4 25.2 31.0 36.9 46.6 54.6 62.1 69.9 77.6 89.3 97.0.7 137 154 161 179 196 210 273 287 305 322 336 357 371 399 420 462 483 511 539 560 574 596 624 645 680 715 757 799 813 827 862 897 918 946 967 988 6 1 2 5 1 1247 1303 17.5 21.9 28.4 35.0 41.6 52.5 61.2 70.0 78.7 87.5 133 154 173 210 225 293 327 346 361 383 398 428 451 496 518 548 578 601 616 639 669 691 729 766 811 856 871 886 924 962 984 4 7 9 9 7 1 7 1277 1337 1397 20.6 25.7 33.4 41.1 48.6 61.6 71.7 81.9 92.2 157 173 185 194 202 215 236 253 328 345 366 387 404 429 446 480 505 556 581 614 673 690 715 749 774 816 859 909 960 976 993 5 7 3 6 2 7 1221 3 8 1364 1431 8 6 25.9 32.3 42.0 51.7 61.4 77.6 90.5 162 178 197 191 216 226 235 250 275 294 383 402 427 451 471 500 520 559 589 677 716 755 785 805 834 873 903 952 1001 0 1 8 1158 7 6 5 1325 4 3 1423 1472 1501 1589 1668 6 1825 Discharge data is for cells after floating at 1.42 Volts 21

Cell Performance Data Available Watts at 20 C (68 F) fully charged End Voltage 1.10V/cell Cell Type C 5 Ah Hours Minutes Seconds 10 8 5 3 2 90 60 45 30 10 5 60 30 10 1 VRPP 8 VRPP 10 VRPP 13 VRPP 16 VRPP 19 VRPP 24 VRPP 28 VRPP 32 VRPP 36 VRPP 40 VRPP 46 VRPP 50 VRPP 55 VRPP 61 VRPP 78 VRPP 82 VRPP 88 VRPP 92 VRPP 96 VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP 264 VRPP 276 VRPP 292 VRPP VRPP 320 VRPP 328 VRPP VRPP 356 VRPP 368 VRPP 388 VRPP 408 VRPP 432 VRPP 456 VRPP 464 VRPP 472 VRPP 492 VRPP 512 VRPP 524 VRPP 540 VRPP 552 VRPP 564 VRPP 580 VRPP 600 VRPP 612 VRPP VRPP 680 VRPP 712 VRPP 744 8 10 13 16 19 24 28 32 36 40 46 50 55 61 78 82 88 92 96 264 276 292 320 328 356 368 388 408 432 456 464 472 492 512 524 540 552 564 580 600 612 680 712 744 0.96 1.20 1.56 1.92 2.28 2.88 3.36 3.84 4.32 4.80 5.52 6.00 6.60 7.32 9.29 9.77 10.5 11.0 11.4 12.2 13.3 14.3 18.6 19.5 20.7 21.9 22.9 24.3 25.3 27.2 28.6 31.5 32.9 34.8 36.7 38.1 39.1 40.5 42.4 43.8 46.2 48.6 51.5 54.3 55.3 56.2 58.6 61.0 62.4 64.3 65.8 67.2 69.1 71.5 72.9 77.2 81.0 84.8 88.6 1.19 1.49 1.94 2.38 2.83 3.58 4.17 4.77 5.37 5.96 6.86 7.45 8.20 9.09 11.5 12.1 13.0 13.6 14.2 15.1 16.6 17.7 23.1 24.3 25.7 27.2 28.4 30.2 31.4 33.7 35.5 39.0 40.8 43.2 45.6 47.3 48.5 50.3 52.7 54.4 57.4 60.3 63.9 67.4 68.6 69.8 72.8 75.7 77.5 79.9 81.6 83.4 85.8 88.7 90.5 95.8 1.85 2.32 3.01 3.71 4.40 5.56 6.49 7.41 8.34 9.27 10.7 11.6 12.7 14.1 18.1 19.0 20.4 21.3 22.3 23.6 26.0 27.8 36.2 38.0 40.3 42.7 44.5 47.3 49.1 52.9 55.6 61.2 64.0 67.7 71.4 74.2 76.0 78.8 82.5 85.3 89.9 94.6 100 114 139 142 150 158 172 2.72 3.40 4.42 5.44 6.46 8.16 9.52 10.9 12.3 13.6 15.7 17.0 18.8 20.8 30.0 31.5 33.8 35.4 36.9 39.2 43.0 46.1 59.9 63.0 66.9 70.7 73.8 78.4 81.5 87.6 92.2 137 157 166 175 178 189 197 207 217 223 231 235 249 261 274 286 3.55 4.44 5.77 7.10 8.43 10.6 12.4 14.2 16.0 17.7 20.4 22.2 24.4 27.1 38.1 40.1 43.0 45.0 46.9 49.9 54.7 58.7 76.2 80.2 85.0 89.9 93.8 99.7 111 117 143 151 160 166 190 199 211 223 227 231 250 256 264 270 276 283 293 299 317 332 348 364 4.19 5.24 6.82 8.39 10.0 12.6 14.7 16.8 18.9 21.0 24.1 26.2 28.8 32.0 44.0 46.2 49.6 51.9 54.1 57.5 63.1 67.6 87.9 92.4 98.1 115 185 207 219 230 244 257 262 266 277 289 295 304 311 318 327 338 345 365 383 401 419 5.28 6.60 8.58 10.6 12.5 15.8 18.5 21.1 23.8 26.4 30.4 33.0 36.3 40.3 51.4 54.0 58.0 60.6 63.3 67.2 73.8 79.1 115 127 140 150 158 182 203 211 216 224 235 243 256 269 285 301 306 311 324 337 345 356 364 372 382 395 403 427 448 469 490 5.71 7.13 9.27 11.4 13.6 17.1 20.0 22.8 25.7 28.5 32.8 35.7 39.2 43.5 56.2 59.0 63.3 66.2 69.1 73.4 80.6 86.4 132 147 153 173 190 199 210 222 230 236 245 256 265 279 294 311 328 334 354 369 377 389 397 406 418 432 441 466 490 513 536 6.30 7.87 10.2 12.6 15.0 18.9 22.0 25.2 28.3 31.5 36.2 39.4 43.3 48.0 61.9 65.1 69.9 73.0 76.2 81.0 88.9 95.3 124 130 152 162 191 210 219 232 245 254 260 270 283 292 324 343 362 368 375 391 407 416 429 438 448 461 476 486 515 540 565 591 7.74 9.68 12.6 15.5 18.4 23.2 27.1 31.0 34.8 38.7 44.5 48.4 53.2 59.0 76.5 80.5 86.3 90.3 94.2 100 153 161 171 188 200 208 224 235 259 271 286 302 314 322 334 349 361 381 400 424 447 455 463 483 502 514 530 542 553 569 589 600 636 667 699 730 9.04 11.3 14.7 18.1 21.5 27.1 31.6 36.2 40.7 45.2 52.0 56.5 62.1 68.9 84.8 89.2 95.7 100 111 122 130 170 178 189 200 209 222 231 248 261 287 300 318 335 348 357 370 387 400 422 444 470 496 505 513 535 557 570 587 600 613 631 652 665 705 739 774 809 12.6 15.7 20.5 25.2 29.9 37.8 44.1 50.4 56.7 63.0 72.4 78.7 86.6 96.0 115 143 157 219 230 244 258 269 286 297 320 337 370 387 410 432 449 460 477 499 516 544 572 606 640 651 662 690 718 735 757 774 791 813 842 858 909 954 999 4 14.2 17.8 23.1 28.5 33.8 42.7 49.8 56.9 64.0 71.1 81.8 88.9 97.8 122 137 150 159 175 187 243 256 271 287 300 318 331 356 374 412 431 456 480 499 512 530 555 574 605 637 674 711 724 736 768 799 817 842 861 880 905 936 955 1 1 1111 1 16.9 21.1 27.4 33.7 40.0 50.6 59.0 67.4 75.9 84.3 96.9 151 158 175 206 268 282 299 316 330 351 365 392 413 454 475 502 530 550 564 585 612 633 667 702 743 784 798 812 846 880 901 928 949 970 997 2 2 1114 9 1224 1279 21.3 26.7 34.7 42.7 50.7 64.0 74.7 85.4 96.0 133 147 163 154 172 191 210 225 292 307 326 345 360 382 397 427 450 494 517 547 577 599 614 637 667 689 727 764 809 854 869 884 922 959 981 1 4 6 6 4 1 4 1274 1334 1394 Discharge data is for cells after floating at 1.42 Volts 22

Cell Performance Data Available Watts at 20 C (68 F) fully charged End Voltage 1.14V/cell Cell Type C 5 Ah Hours Minutes Seconds 10 8 5 3 2 90 60 45 30 10 5 60 30 10 1 VRPP 8 VRPP 10 VRPP 13 VRPP 16 VRPP 19 VRPP 24 VRPP 28 VRPP 32 VRPP 36 VRPP 40 VRPP 46 VRPP 50 VRPP 55 VRPP 61 VRPP 78 VRPP 82 VRPP 88 VRPP 92 VRPP 96 VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP VRPP 264 VRPP 276 VRPP 292 VRPP VRPP 320 VRPP 328 VRPP VRPP 356 VRPP 368 VRPP 388 VRPP 408 VRPP 432 VRPP 456 VRPP 464 VRPP 472 VRPP 492 VRPP 512 VRPP 524 VRPP 540 VRPP 552 VRPP 564 VRPP 580 VRPP 600 VRPP 612 VRPP VRPP 680 VRPP 712 VRPP 744 8 10 13 16 19 24 28 32 36 40 46 50 55 61 78 82 88 92 96 264 276 292 320 328 356 368 388 408 432 456 464 472 492 512 524 540 552 564 580 600 612 680 712 744 0.93 1.17 1.52 1.91 2.22 2.80 3.27 3.73 4.20 4.76 5.48 5.96 6.55 7.27 9.22 9.69 10.4 10.9 11.3 12.1 13.2 14.2 18.4 19.4 20.6 21.7 22.7 24.1 25.1 26.9 28.4 31.2 32.6 34.5 36.4 37.8 38.8 40.2 42.1 43.5 45.9 48.2 51.1 53.9 54.8 55.8 58.1 60.5 61.9 63.8 65.2 66.7 68.6 70.9 72.3 76.6 80.4 84.2 87.9 1.16 1.45 1.88 2.32 2.75 3.47 4.05 4.63 5.21 5.79 6.66 7.24 7.96 8.83 11.4 12.0 12.8 13.4 14.0 14.9 16.3 17.5 22.8 23.9 25.4 26.8 28.0 29.8 30.9 33.3 35.0 38.5 40.3 42.6 44.9 46.7 47.9 49.6 51.9 53.7 56.6 59.5 63.0 66.5 67.7 68.9 71.8 74.7 76.5 78.8 80.5 82.3 84.6 87.5 89.3 94.6 99.2 1.85 2.31 3.01 3.70 4.39 5.55 6.47 7.40 8.32 9.25 10.6 11.6 12.7 14.1 18.0 18.9 20.3 21.2 22.2 23.5 25.8 27.7 36.0 37.8 40.2 42.5 44.3 47.1 48.9 52.6 55.4 60.9 63.7 67.4 71.1 73.8 75.7 78.5 82.2 84.9 89.5 94.2 99.7 114 127 130 150 157 172 2.40 3.00 3.90 4.79 5.69 7.19 8.39 9.59 10.8 12.0 13.8 15.0 16.5 18.3 24.7 26.0 27.9 29.1 30.4 32.3 35.5 38.0 49.4 51.9 55.1 58.2 60.8 64.6 67.1 72.2 76.0 83.6 87.4 92.4 97.5 137 147 162 166 171 175 179 190 194 205 215 225 236 2.92 3.65 4.74 5.84 6.93 8.76 10.2 11.7 13.1 14.6 16.8 18.2 20.1 22.3 29.4 30.9 33.1 34.6 36.1 38.4 42.2 45.2 58.7 61.7 65.5 69.3 72.3 76.8 79.8 85.8 90.4 99.4 139 154 163 172 175 178 185 197 203 208 218 226 230 244 256 268 280 3.34 4.17 5.42 6.67 7.92 10.0 11.7 13.3 15.0 16.7 19.2 20.8 22.9 25.4 31.6 33.2 35.6 37.3 38.9 41.3 45.4 48.6 63.2 66.4 70.5 74.5 77.8 82.6 85.9 92.3 97.2 130 133 157 175 185 188 191 199 207 219 224 235 243 248 262 275 288 301 4.09 5.11 6.64 8.18 9.71 12.3 14.3 16.4 18.4 20.4 23.5 25.6 28.1 31.2 36.2 38.1 40.9 42.7 44.6 47.4 52.0 55.7 72.5 76.2 80.8 85.5 89.2 94.7 98.5 111 136 143 152 158 171 189 216 219 229 238 243 251 256 262 269 279 284 301 316 331 346 4.46 5.57 7.25 8.92 10.6 13.4 15.6 17.8 20.1 22.3 25.6 27.9 30.7 34.0 38.0 40.0 42.9 44.9 46.8 49.7 54.6 58.5 76.1 80.0 84.8 89.7 93.6 99.5 111 117 142 150 160 166 179 189 199 211 222 226 230 250 255 263 269 275 283 293 298 316 332 347 363 4.96 6.20 8.05 9.91 11.8 14.9 17.3 19.8 22.3 24.8 28.5 31.0 34.1 37.8 44.0 46.2 49.6 51.8 54.1 57.5 63.1 67.6 87.9 92.4 98.1 115 185 207 219 230 243 257 261 266 277 289 295 304 311 318 327 338 345 365 383 401 419 6.44 8.05 10.5 12.8 15.2 19.2 22.4 25.6 28.8 32.0 34.3 37.3 41.0 45.5 55.7 58.6 62.9 65.8 68.6 72.9 80.0 85.8 111 117 124 132 137 152 163 172 189 197 209 220 229 234 243 254 263 277 292 309 326 332 337 352 366 375 386 395 403 415 429 437 463 486 509 532 7.48 9.35 12.2 15.0 17.8 22.4 26.2 29.9 33.6 37.4 43.0 46.7 51.4 57.0 64.7 68.0 73.0 76.3 79.6 84.6 92.9 99.5 136 153 159 169 176 189 199 219 229 242 255 265 272 282 295 305 322 338 358 378 385 391 408 425 435 448 458 468 481 498 508 537 564 590 617 10.1 12.7 16.5 20.3 24.0 30.4 35.4 40.5 45.6 50.6 58.2 63.3 69.6 77.2 83.9 88.2 94.7 99.0 176 187 198 207 220 245 258 284 297 314 331 344 353 366 383 396 418 439 465 491 499 508 529 551 564 581 594 607 624 646 659 697 732 766 801 11.8 14.7 19.1 23.5 27.9 35.3 41.2 47.1 53.0 58.9 67.7 73.5 80.9 89.7 90.8 95.4 130 140 182 191 203 214 223 237 247 265 279 307 321 358 372 382 396 414 428 452 475 503 531 540 549 573 596 610 628 642 656 675 698 712 754 791 829 866 14.0 17.6 22.8 28.1 33.4 42.1 49.2 56.2 63.2 70.2 80.8 87.8 96.6 115 133 157 214 241 251 267 277 298 314 345 361 382 403 419 429 445 466 481 507 534 565 596 607 617 643 670 685 706 722 738 759 785 800 847 889 931 973 18.4 23.0 29.9 36.8 43.6 55.1 64.3 73.5 82.7 91.9 115 140 122 136 142 151 166 178 231 243 258 273 285 303 315 338 356 392 409 433 457 475 487 504 528 546 576 605 641 676 688 700 730 760 777 801 819 837 860 890 908 961 1009 6 4 Discharge data is for cells after floating at 1.42 Volts 23

Battery arrangement as per rack design CNT. REF 1 TIER 2 TIER 1 STEP 2 STEP 3 STEP 4 STEP 1 STEP 2 STEP 3 STEP 4 STEP W H W H W H W H W H W H W H W H B21/B22 296 703 434 818 572 933 434 1450 572 1700 B23/B24 B31/32, B32-1 440 788 650 903 860 8 440 1400 650 1620 860 1850 B41/42 440 844 650 959 860 4 440 1550 650 0 860 2050 B31-2 436 788 644 903 852 8 436 1400 644 1620 852 1850 B31-3 604 788 896 903 604 1400 896 1620 B31-4 774 788 774 1400 B31-5 942 788 481 0 942 1400 B31-6 565 673 565 0 B41-2 436 844 644 959 852 4 436 1550 644 0 852 2050 B41-3 604 844 896 959 604 1550 896 0 B41-4 774 844 774 1550 B41-5 942 844 481 1320 942 B41-6 565 729 565 1320 Calculation of length : length of rack = (x + 5) x no. of block cells in a row ( for all block cells ) Where x = length of cell or block cell for row-wise mounting ( i.e. For B 31, B 32-1, B 41, B 21-1, B 23-1, B 24-1) = width of cell or block cell for cross-wise mounting ( i.e. For B 31-2,3,4 & B 41-2,3,4,5,6 ) The value of length should be rounded-off to nearest to 50 mm and 5mm should be added. Important changes : 1. For single tier racks lower step gable height increased to 300mm instead of 115mm for better accessibility of bottom row cells and terminal assembly. 2. But for two tier racks lower step gable height is maintained as 115mm since terminal assembly will be provided on the upper tier. 3. Rack legs or side supporters assembled to inside, reducing the width of rack by angle width. 4. The changes have been taken into consideration while calculating above dimension. 1 step, 1 tier rack 1 step, 2 tier rack 2 step, 1 tier rack 2 step, 2 tier rack 3 step, 1 tier rack 3 step, 2 tier rack 4 step, 1 tier rack 4 step, 2 tier rack 24