LiFePO 4 Battery Specification Product Name LiFePO 4 Battery Product Specification 3.2V/20Ah
Contents 1. Summary... 3 2. Description... 3 3. Parameters... 3 4. Test Condition... 4 5. Electrical Characteristics... 4 6. Mechanical Characteristics... 5 7. Safety Characteristics... 5 8. Product Schematic Diagram... 6 9. Typical Curve... 7 10. Storage... 9 11. Battery Maintenance... 9 12. Dos & Don'ts... 9 13. Dos & Don ts-- Transportation... 10
1. Summary This Specification describes the requirements of the LiFePO 4 rechargeable battery supplied by HiPower. The product mentioned in the specification accords with Q/HP 01-2010. We will not undertake any related consequences or liabilities if customer does not install, use and maintain the product in strict accordance with this specification. 2. Description 2.1 Name LiFePO 4 Battery 2.2 Type (P: Prismatic;P: Power)20Ah 3. Parameters No. Item Unit Parameters Remark 3.1 Nominal Capacity Ah 20.0 3.2 Nominal Voltage V 3.2 Capacity according to standard discharge, after standard charge Average voltage according to standard discharge, after standard charge 3.3 Charge Type / CC/CV / 3.4 Charge Cut-off Voltage V 3.65 / 3.5 Discharge Cut-off Voltage V 2.5 / 3.6 Quick Charge Current A 20.0 CC 3.7 Quick Discharge Current A 40.0 CC 3.8 Standard Charge Current A 6.7 CC 3.9 Standard Discharge Current A 6.7 CC 3.10 Max Operating Discharging Current A 60.0 CC 3.11 Pulse Discharge Current A 200.0 <10s 3.12 3C Discharging Capacity Ah 18 Rated Capacity 90% 3.13 Weight g 880±20 / 3.14 Impedance mω <1.5 Full Charge 3.15 Dimension(L W H) mm (103±2) (41± 2) (162±2) /
3.16 Volume Energy Density 3.17 Gravimetric Power Density Wh/ L Wh/ Kg 104 / 82.5 / 3.18 3.19 Working Temperature Storage Temperature Charge 0~45 0~45 / Discharge -20~60-20~60 / One Month -20~60-20~60 / 3 Months -20~45-20~45 / 6 Months -20~25-20~25 / Atmospheric Pressure kpa 86~106 / Relative Humidity RH 25%~85% / 4. Test Condition 4.1 Standard Charge At 20±5, charge with 1I 3 constant current till it reaches charge cut-off voltage (3.65V), then charge with constant voltage till charge current<0.01c. 4.2 Standard Discharge At 20±5, discharge with 1I 3 constant current till discharge cut-off voltage (2.5V). 4.3 Standard Testing Environment Temperature:15~25 Relative Humidity:25%~85%RH Atmospheric Pressure:86kPa~106kPa 5. Electrical Characteristics No Items Test Method Technical Requirements 1 Nominal Capacity After standard charge, store it for 1hour. At 20±5, standard discharge till 2.5V to get the nominal capacity. 20.0Ah 2 3 High (C-rate ) Discharge Low-Temperature Discharge After standard charge, store it for 1hour at 20±5. Discharge 3C constant-current to cut-off voltage. Keep the battery at -20±2 for 20hours after standard charge. Measure the discharge time with constant discharge current 1I 3 to cut-off voltage. Then, at 20±5, lay the battery aside for 2hours. Observe the exterior of the battery. Discharging time should be no less than 18min. No distortion, no explosion. Discharge time should be no less than 126min. The battery no distortion, no explosion.
4 High-Temperature Discharge Keep the battery at 55±2 for 5hours after standard charge. Measure the discharge time with constant discharge current 1I 3 to cut-off voltage. Then, at 20±5, lay the battery aside for 2hours. Observe the exterior of the battery. Discharge time should be no less than 171min. No distortion, no explosion. 5 Charge Retention At 20±5 after standard charge, keep the battery open circuit for 30 days. Then, measure the discharge time with constant discharge current 1I 3 to cut-off voltage. Discharge time should be no less than 144min. 6 Cycle Life At 20±2, charge it with constant charge current 1I 3 to charge cut-off voltage. Then charge it with constant voltage to the current 0.01C. 10min lay aside after the charge stop, discharge with discharge current 1I 3 till the cut-off voltage. Another 10min later, repeat the cycle, till the capacity of battery 80%. After 1500times cycle life, the capacity 16Ah. 6. Mechanical Characteristics No. Items Test Method Technical Requirements 1 Drop Test After standard charge, drop the battery from a height of 1.5m to a wooden board (20mm thick). The cells should be dropped in all the 6 faces. During the test, make note of the changes of the voltage and the temperature of the battery. No leakage, no fume, no explosion. 2 3 Extrusion Test Puncture Testing 4 Heating Test After standard charge, store it for 1hour at 20±5. a) Extrusion direction: press in the vertical direction of the battery polar board. b) Extrusion area: no less than 20cm 2 c) Extrusion extent: till the battery shell is ruptured or till it is short-circuited inside (voltage at 0V). During the test, make note of the changes of the voltage and the temperature of the battery. After standard charge, put the battery at 20±5 for 1hour. Then puncture the battery through the electrode board with the high temperature-proof steel pin with diameter of 3mm (the pin staying in the battery). The test must be conducted in the protective condition. During the test, make note of the changes of the voltage and the temperature of the battery. Put the battery at 85±2 for 120min and observe the exterior of the battery. Meanwhile, make note of the changes of the battery voltage. No explosion, no fire. (Distortion and leakage are allowed). No explosion, no fire. (Distortion and leakage are allowed). No explosion, no fire. (Distortion and leakage are allowed).
7. Safety Characteristics No. Items Test Method 1 Short Circuit After standard charge, put the battery at 20±5 for 1hour. Then short-circuit the battery for 10min, connecting the positive and negative terminals of it (The resistance of the circuitry 20mΩ). Notice the change of the temperature, the current and the voltage of the battery during the experiment. Technical Requirements No fire, no explosion. 2 Over Charge After standard charge, put the battery at 20±5 for 1hour. The battery with thermocouple is put into the wind cabinet. Charge it with current 9I 3 till the voltage reaches 10V. Observe the exterior of the battery. Notice the changes of the temperature, the current and the voltage of the battery during the experiment. No fire, no explosion. 3 Over Discharge After standard charge, put the battery at 20±5 for 1hour, discharge the battery (if there is BMS, please disconnect the BMS first) with the current 1I 3 till the voltage of the battery is 0V. Notice the change of the temperature, the current and the voltage of the battery during the experiment. No explosion, no leakage, no fire. 8. Product Schematic Diagram
9. Typical Curve 9.1 Typical Charging-Discharging Curve: 9.2 Difference C-rate Discharging Curve:
9.3 High-Low Temperature Test Typical Curve: 9.4 Cycle Life Curve:
10. Storage The place of preserving the battery must accord with those following requirements: Indoor, the temperature of environment is between 5 ~35, the relative humidity is 75%, the place must be clean, dry and ventilate; avoid contacting to the corrosives; keep far away from fire and heat; keep the battery 50%~60% charge state; avoid over-discharge, the battery should be charged once every three months when preserved. 11. Battery Maintenance (1) Be sure to charge the new battery fully before using for the first time.the battery will reach its max capacity after 3~5 times of full charge and discharge. (2) The battery should be used in the ventilating and dry environment. Stay away from fire. (3) The best working temperature range for the battery is 15 ~40.Beyond that, there will be effect on the battery's normal working. (4) Don't short circuit the battery by connecting the cathode and anode, in case of any danger. (5) Don't wash the outer shell of the battery with impregnate.in case of fire, please use Carbon Chlorine to put out fire instead of CO 2. (6) If the battery goes wrong, please deliver that to the factory service center or relevant organization for proper disposal. 12. Dos & Don'ts In case of leakage, heat, fire, performance decrease etc, please use the battery according to the following regulations. Our company won t take any responsibility for any mis-operation not according to this specification. (1) First plug the input end of the charger into the battery charging socket, and then connect with AC power. (2) When charging, it is normal when the red indicator is on. When the green indicator is on, the battery is fully charged. Please stop charging the battery. (3) After finishing charging, please disconnect the plug with the AC power first and then disconnect the plug connecting the battery. (4) It is prohibited to connect the idle charger (when not connecting it with the battery) with AC power supply for a long time. (5) It is allowed to charge the battery either taking it off the electric appliance or directly on the appliance. (6) When charging the battery directly on the electric appliance, please don t start the electric equipment to avoid damaging the charger. (7) Please charge the battery in a ventilated place far away from fire. Use matchable proper charger only. (8) For the sake of safety, be sure to charge the battery where children cannot reach. (9) Handle with care, do not shake. (10) Don t immerse the battery in the water or other liquid, in case of damp. Especially on rainy days, prevent the water from going into the controller and motor to avoid short- circuit. (11) Don t connect the anode and cathode to avoid short circuit. (12)Please charge the battery with the Special charger provided by HiPower.
(13)Don t dismantle the battery, otherwise it may cause inner short-circuit and then decomposition of the inner material, fire and even explosion. In addition, dismantling the battery may cause the leakage of the electrolyte, which will have some bad effects on human body. If the electrolyte is spattered onto skin, eye and other parts of the body, please wash with clean water immediately and go to the doctor at once. (14) Don t dispose the battery with fire, avoiding accidents it might cause. (15)If the battery is damaged, distorted or there is leakage of the electrolyte or the taste of electrolyte and some similar abnormal phenomena, don t use the battery any more. Please deliver that to the factory service center or relevant organization for proper disposal. In addition, battery with electrolyte leakage should be far away from fire. (16) The battery provider should be responsible for replacing and installing the battery and the consumer shouldn t replace that at will. (17) The consumer shouldn t dismantle the battery at will. Or our company won t take any responsibility. (18) When using the battery, the consumer need to discharge the battery to the low voltage of the controller, then charge it with the matchable charger. 13. Dos & Don ts-- Transportation (1)The battery is suitable for being transported by truck, train, boat and plane. During transportation, please avoid solarization, drench and serious shake. (2)The battery must be packed in insulation shockproof materials with labels saying ' Fragile'. (3) Put the battery in the upright position. A sticker indicating 'Don t upside down' is needed. (4) Handle with care in transit. (5) Don t place any heavy objects on battery pack to avoid damaging the battery pack because of the impact. (6) Don't mix-transport with flammable or explosive consignment, or metal objects with sharp end. (7) Outer packing should be marked ' Away from moisture, water, and fire'.