Li-ion Battery. MLi Ultra 12/2500 MLi Ultra 12/5000 MLi Ultra 24/5000 INSTALLATION AND COMMISSIONING OF MULTIPLE BATTERIES

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INSTALLATION AND COMMISSIONING OF MULTIPLE BATTERIES Li-ion Battery MLi Ultra 12/2500 MLi Ultra 12/5000 MLi Ultra 24/5000 MASTERVOLT Snijdersbergweg 93 1105 AN Amsterdam The Netherlands Tel.: +31-20-3422100 Fax.: +31-20-6971006 ENGLISH: PAGE 1 NEDERLANDS: PAGINA 17 DEUTSCH: SEITE 33 FRANÇAIS: PAGINA 49 CASTELLANO: PAGINA 65 ITALIANO: PAGINA 81 www.mastervolt.com Copyright 2013 Mastervolt, 10000005933/02 August 2013

TABLE OF CONTENTS Copyright 2013 Mastervolt. All rights reserved. Reproduction, transfer, distribution or storage of part or all of the contents in this document in any form without the prior written permission of Mastervolt is prohibited. TABLE OF CONTENTS: 10000005933/02 August 2013 1 IMPORTANT INFORMATION... 3 1.1 Unpacking... 3 1.2 Needed for installation:... 3 1.2.1 Ventilation... 3 1.3 1.4 External cut-off relay... 3 General installation guidelines... 3 1.5 Connection module... 4 2 INSTALLATION AND COMMISSIONING... 5 2.1 Minimum safety requirements, multiple battery installation... 5 2.2 Installation and commissioning... 5 2.3 Charger settings... 5 3 MULTIPLE BATTERY SYSTEM EXAMPLES... 6 3.1 Parallel connection, total maximum SYSTEM current < 500 amps... 6 3.1.1 Schematic installation (parallel connection, total maximum current < 500 Amps)... 6 3.1.2 Required materials (parallel connection, total maximum current < 500 Amps)... 6 3.1.3 MasterBus configuration (parallel connection, total maximum current < 500 Amps)... 7 3.1.4 Commissioning (parallel connection, total maximum current < 500 Amps)... 7 3.2 Parallel connection, total maximum current > 500 a, max 500 a per battery... 8 3.2.1 Schematic installation (parallel connection, total maximum current > 500 Amps)... 8 3.2.2 Required materials (parallel connection, total maximum current > 500 Amps)... 8 3.2.3 MasterBus configuration (parallel connection, total maximum current > 500 Amps)... 9 3.2.4 Commissioning (parallel connection, total maximum current > 500 Amps)... 9 3.3 Serial connection 48V, using one charger for two batteries... 10 3.3.1 Schematic installation (Serial connection 48V, one charger for two batteries)... 10 3.3.2 Required materials (Serial connection 48V, one charger for two batteries)... 10 3.3.3 MasterBus configuration (Serial connection 48V, one charger for two batteries)... 11 3.3.4 Commissioning (Serial connection 48V, one charger for two batteries)... 11 3.4 Serial connection maximum 10 batteries... 12 3.4.1 Schematic installation (Serial connection, maximum 10 batteries)... 12 3.4.2 Required materials (Serial connection, maximum 10 batteries)... 12 3.4.3 MasterBus configuration (Serial connection, maximum 10 batteries)... 13 3.4.4 Commissioning (Serial connection, maximum 10 batteries)... 13 4 ORDERING INFORMATION... 14 5 TECHNICAL INFORMATION MULTIPLE BATTERIES... 15 5.1 Specifications... 15 2Copyright 2013 Mastervolt / August 2013 / Multiple Li-ion Batteries MLi Ultra 12/2500, MLi Ultra 12/5000, Mli Ultra 24/5000 / EN

IMPORTANT INFORMATION 1 IMPORTANT INFORMATION During installation and commissioning of the Liion batteries, the Safety Guidelines & Measures are applicable at all times. See chapter 1 of the single battery manual. For more info like operation, single battery schemes and installation environment, refer to the other chapters of the user's manual. 1.1 UNPACKING After unpacking, check the contents for possible damage. Do not use the product if it is damaged. If in doubt, contact your supplier. 1.2 NEEDED FOR INSTALLATION: Hexagon socket wrench 13mm (M8 screw) to connect the battery cables to the Li-ion battery (torque: see single battery manual section 6.6) Tools to install the wiring 2 mm flat blade screwdriver to fasten the relay wiring 4 mm flat blade screwdriver to fasten the balance line wiring For adjustment of setpoints: A MasterBus control panel or laptop with configuration software and MasterBus - USB interface. 1.3 EXTERNAL CUT-OFF RELAY For safety purposes installation of a safety relay controlled by the battery is obligatory! Installation and commissioning of the Li-ion battery requires programming of events in a MasterBus communication network to control the battery charger. The installer must be familiar with the programming of such events. For nominal voltages above 48V an alternative relay must be used. 1.4 GENERAL INSTALLATION GUIDELINES Refer to the single battery manual. 1.2.1 Ventilation Place the battery in a sufficiently ventilated room. EN / Multiple Li-ion Batteries Mli Ultra 12/2500, MLi Ultra12/5000, MLi Ultra24/5000 / August 2013 / Copyright 2013 Mastervolt 3

IMORTANT INFORMATION 1.5 CONNECTION MODULE The connection module consists of three parts, refer to figure 1-1: Relay Controls (1-6) MasterBus (7) Balance line for two batteries (8,9) 1. Relay Control (RC) minus 2. Open relay pulse (12/24V) 3. Close relay pulse (12/24V) 4. RC positive (12/24V) 5. RC minus from other battery 6. RC open relay from other battery 7. MasterBus connectors 8. Balance line minus 9. Balance line positive Figure 1-1: Connection module R. Mastervolt safety relay with four cables used: A. Black relay wire (-) B. Orange relay wire (open) C. Brown relay wire (close) D. Red relay wire (+) E. Yellow relay wire (not used) I. First battery, able to open and close the relay. II. Second battery, linked to battery I. Able to open the relay only. Figure 1-2: Shared relay for multiple batteries (max 2 in series) See figure 1-2. Terminals 1 to 4 of the first battery (I) are connected to the relay, terminals 1 and 2 of the second battery (II) are connected to 5 and 6 of the first battery (I). This way the two batteries can be protected by one relay, battery II leaving the option to open the relay only. Battery I can open and close the relay. 4Copyright 2013 Mastervolt / August 2013 / Multiple Li-ion Batteries MLi Ultra 12/2500, MLi Ultra 12/5000, Mli Ultra 24/5000 / EN

INSTALLATION AND COMMISSIONING 2 INSTALLATION AND COMMISSIONING 1. Multiple Li-ion batteries 2. Fuse to wire size 3. Safety Relay to disconnect all loads and chargers when needed 4. Battery charger with a provision to stop charging when needed 5. Loads Figure 2-1: Battery system overview Before the Li-ion battery can be used, it must be installed and commissioned. CAUTION! The Li-ion battery is a special battery and it needs special safety precautions in the installation! 2.1 MINIMUM SAFETY REQUIREMENTS, MULTIPLE BATTERY INSTALLATION To prevent hazardous situations YOU MUST: A. Install a safety relay to disconnect the battery under abnormal circumstances B. Install a charger that stops charging if the battery indicates so C. Use properly sized fuses and wiring D. Use cables of same length for batteries in parallel E. Configure the MasterBus Stop charge event The graph in figure 2-1 shows a simplified overview of a safe Li-ion battery system. 1. Multiple MLI Ultra 12/2500, MLI Ultra 12/5000 or MLi Ultra 24/5000 batteries. 2. Fuse in the positive battery cables to protect DC cabling and batteries. It must correspond with the cable diameters up to maximum 500A. The IR must be at least 15000A. 3. Safety Relay(s), must be able to disconnect the loads and the charging devices when the battery enters an unsafe situation. 4. Battery charging device, must be able to stop charging or switch to the Float stage at a MasterBus event when the battery detects a stop charge condition. It has to be configured to charge a Li-ion battery, refer to charger settings in the MasterBus configuration. 5. DC loads. If the charger is stopped, battery power is still available for the loads (5). If the safety relay (3) disconnects, there is no battery power available for the loads. Refer to single battery manual chapter 8 for advanced functionality, explanation of the Battery Safety event and the Stop charge event. 2.2 INSTALLATION AND COMMISSIONING Installation and commissioning depend on the system in which the Li-ion battery is used. CAUTION! With MasterBus Power enabled, the MasterBus network will drain the Li-ion Battery slowly, even if the battery has been disconnected from the system. Refer to the MasterBus configuration in the single battery manual. We describe four multiple Li-ion battery systems: 1 two or more batteries in parallel, total maximum current < 500 Amps, section 3.1 2 two or more batteries in parallel, total maximum current > 500 Amps, section 3.2 3 two batteries in series, using one charger, section 3.3 4 up to 10 batteries in series, using a charger per battery, section 3.4 Select one of these options and continue with the corresponding section for installation and commissioning. 2.3 CHARGER SETTINGS A single Mastervolt Li-ion battery can be charged with any standard Mastervolt battery charger. Adjust charge characteristic of the IUoUo characteristic as follows: Nominal battery voltage Bulk / absorption voltage setting Float voltage setting 12V 14.6 V 13.5 V 24V 29.2 V 27.0 V For higher voltages an alternative charger is necessary. Refer to the user s manual of the battery charger for Li-ion charge settings. EN / Multiple Li-ion Batteries Mli Ultra 12/2500, MLi Ultra12/5000, MLi Ultra24/5000 / August 2013 / Copyright 2013 Mastervolt 5

MULTIPLE BATTERY SYSTEM EXAMPLES 3 MULTIPLE BATTERY SYSTEM EXAMPLES 3.1 PARALLEL CONNECTION, TOTAL MAXIMUM SYSTEM CURRENT < 500 AMPS 3.1.1 Schematic installation (parallel connection, total maximum current < 500 Amps) Figure 3-1: Parallel connection, current under 500A 1. Safety relay 2. Main fuse in positive busbar 3. Connection module 4. MasterBus display 5. Battery fuse in positive line 6. MasterBus connection to charger 7. Busbar 8. Relay cable 9. MasterBus cable 10. MasterBus terminator 11-14. MLi Ultra battery A-E. Refer to figure 1-2. Follow next steps to install the safety relay: 1 Move the safety relay in the LOCK OFF position. See single battery manual section 4.8. 2 Connect the DC main wiring as indicated but do not place the Main fuse yet. 3 Connect the wiring for the control circuit of the safety relay as indicated. 4 Connect the MasterBus cabling between the devices as indicated. Keep the rules in mind as described in single battery manual section 5.2. 5 Add a MasterBus control panel to the MasterBus network. 3.1.2 Required materials (parallel connection, total maximum current < 500 Amps) Quantity Mastervolt Description @ 12V @ 24V Part number n -- 66012500 Li-ion Battery MLi Ultra 12/2500 n -- 66015000 Li-ion Battery MLi Ultra 12/5000 -- n 66025000 Li-ion Battery MLi Ultra 24/5000 1 -- 79007700 Safety relay 12V/500A, part # 7700 -- 1 79007702 Safety relay 24V/500A, part # 7702 1 1 77049000 500A Fuse to protect the DC Main Wiring* 1 1 778T2S600 T-Fuse holder for 77049000 1 1 MasterBus control panel (see single battery manual section 6.2) ** ** DC Main Wiring, with Main Fuse depending on system current ** ** Wiring for the safety relay control circuit, minimum cross section: 0.5mm² ** ** MasterBus communication cables n number of MLi batteries *Any other fuse can be applied as long as the voltage/current ratings are fitting the installation and the IR (Interrupt Rating) of the fuse is at least 15000Amps. 6Copyright 2013 Mastervolt / August 2013 / Multiple Li-ion Batteries MLi Ultra 12/2500, MLi Ultra 12/5000, Mli Ultra 24/5000 / EN

MULTIPLE BATTERY SYSTEM EXAMPLES ** Installation dependent 3.1.3 MasterBus configuration (parallel connection, total maximum current < 500 Amps) Refer to the single battery manual for explanation of the Stop Charge event. CAUTION! Configuration of the Stop Charge event is mandatory to prevent major damage to the MLi Ultra batteries! 3.1.4 Commissioning (parallel connection, total maximum current < 500 Amps) During commissioning, first the functioning of the connected cut off relay must be checked. Important is, the relay reacts correctly on a MasterBus event, in this case by operating the buttons in the MasterBus monitoring screen. Further, a wiring check is necessary. This is done by reading the current measured by the battery, in the monitoring screen. Make sure the batteries have approximately equal states of charge before connecting in parallel. Follow next steps. 1 UNLOCK the relay, refer to single battery manual section 4.8. 2 Enter on the MasterBus control panel the MasterBus MLi Ultra monitoring page. Operate the Close Relay button at the bottom of this page. If the relay is closed (On), the knob position must be shifted inwards. See figure 3-2. 3 Operate the Open Relay button on the last battery (figure 3-1, battery 14). If the relay is open (Off), the knob position must be outwards. Keep the relay open. 4 Install all fuses. 5 Switch On the load. 6 Verify on the MLi Ultra monitoring page that there is no current flow. See figure 3-3. 7 Close the relay with the first battery (figure 3-1, battery 11). Verify that a current is flowing out of the battery (negative value). 8 Switch Off the load, switch On the charger and verify that a current is flowing into the battery (positive value). 9 If necessary, check if the battery is in MasterBus Powering mode. See single battery manual section 8.1 Configuration: MasterBus Power. 10 If necessary, remove the MasterBus control panel from the MasterBus network. Figure 3-2: Buttons for closing and opening the relay Figure 3-3: Checking zero current EN / Multiple Li-ion Batteries Mli Ultra 12/2500, MLi Ultra12/5000, MLi Ultra24/5000 / August 2013 / Copyright 2013 Mastervolt 7

MULTIPLE BATTERY SYSTEM EXAMPLES 3.2 PARALLEL CONNECTION, TOTAL MAXIMUM CURRENT > 500 A, MAX 500 A PER BATTERY 3.2.1 Schematic installation (parallel connection, total maximum current > 500 Amps) Figure 3-4: Parallel connection, current over 500A 1. Safety relay 2. Main fuse in positive bus bar 3. Communication module 4. MasterBus display 5. Fuse in positive battery line 6. MasterBus connection to charger 7. Busbar 8. Relay cable 9. MasterBus cable 10. MasterBus terminator 11-14. MLi Ultra battery A- E. Refer to figure 1-2. Follow next steps to install the safety relay: 1 Move the safety relay in the LOCK OFF position. See single battery manual section 4.8. 2 Connect the DC main wiring as indicated but do not place the Main fuse yet. 3 Connect the wiring for the control circuit of the safety relay as indicated in figure 1-2. 4 Connect the MasterBus cabling between the devices as indicated. Follow single battery manual section 5.2. 5 Add a MasterBus control panel to the MasterBus network. 3.2.2 Required materials (parallel connection, total maximum current > 500 Amps) Quantity Mastervolt Description @ 12V @ 24V Part number n -- 66012500 Li-ion Battery MLi Ultra 12/2500 n -- 66015000 Li-ion Battery MLi Ultra 12/5000 -- n 66025000 Li-ion Battery MLi Ultra 24/5000 n -- 79007700 Safety relay 12V/500A, part # 7700 -- n 79007702 Safety relay 24V/500A, part # 7702 n n 77049000 500A Fuse to protect the DC Main Wiring* n n 778T2S600 T-Fuse holder for 77049000 1 1 MasterBus control panel (see single battery manual section 6.2) ** ** DC Main Wiring, with Main Fuse depending on system current ** ** Wiring for the safety relay control circuit, minimum cross section: 0.5mm² ** ** MasterBus communication cables n number of MLi batteries *Any other fuse can be applied as long as the voltage/current ratings are fitting the installation and the IR (Interrupt Rating) of the fuse is at least 15000Amps. ** Installation dependent 8Copyright 2013 Mastervolt / August 2013 / Multiple Li-ion Batteries MLi Ultra 12/2500, MLi Ultra 12/5000, Mli Ultra 24/5000 / EN

MULTIPLE BATTERY SYSTEM EXAMPLES 3.2.3 MasterBus configuration (parallel connection, total maximum current > 500 Amps) Refer to the single battery manual for explanation of the Stop Charge event. CAUTION! Configuration of the Stop Charge event is mandatory to prevent major damage to the MLi Ultra batteries! 3.2.4 Commissioning (parallel connection, total maximum current > 500 Amps) During commissioning, first the functioning of the connected cut off relay must be checked. Important is, the relay reacts correctly on a MasterBus event, in this case by operating the buttons in the MasterBus monitoring screen. Further, a wiring check is necessary. This is done by reading the current measured by the battery, in the monitoring screen. Make sure the batteries have approximately equal states of charge before connecting in parallel. Follow next steps. 1 UNLOCK the relay, refer to single battery manual section 4.8. 2 Enter on the MasterBus control panel the MasterBus MLi Ultra monitoring page. Operate the Close Relay button at the bottom of this page. If the relay is closed (On), the knob position must be shifted inwards. See figure 3-5. 3 Operate the Open Relay button. If the relay is open (Off), the knob position must be outwards. Keep the relay open. 4 Install all fuses. 5 Switch On the load. 6 Verify on the MLi Ultra monitoring page that there is no current flow. See figure 3-6. 7 Close the relay and verify that a current is flowing out of the battery (negative value). 8 Switch Off the load, switch On the charger and verify that a current is flowing into the battery (positive value). 9 If necessary, check if the battery is in MasterBus Powering mode. See single battery manual section 8.1 Configuration: MasterBus Power. 10 If necessary, remove the MasterBus control panel from the MasterBus network. Figure 3-5: Buttons for closing and opening the relay Figure 3-6: Checking zero current EN / Multiple Li-ion Batteries Mli Ultra 12/2500, MLi Ultra12/5000, MLi Ultra24/5000 / August 2013 / Copyright 2013 Mastervolt 9

MULTIPLE BATTERY SYSTEM EXAMPLES 3.3 SERIAL CONNECTION 48V, USING ONE CHARGER FOR TWO BATTERIES 3.3.1 Schematic installation (Serial connection 48V, one charger for two batteries) 1. MLi Ultra battery 2. Main fuse in positive battery line 3. Communication module 4. 48V relay to be operated directly like shown or via the MasterBus operated Digital AC 1x6A on the relay coils. See single battery manual section 7.6.1 for an example. 5. 48V MasterBus compatible charger 6. Fuse to protect the charge wiring 7. DC cable 8. Relay wiring 9. MasterBus cable. A-E Refer to figure 1-2. Figure 3-7: Serial connection with one charger for all batteries Follow next steps to install the safety relay: 1 Move the safety relay in the LOCK OFF position. See section 4.8. 2 Connect the DC main wiring as indicated but do not place the Main fuse yet. 3 Connect the wiring for the control circuit of the safety relay as indicated in figure 1-2. 4 Connect the MasterBus cabling between the devices as indicated. Keep the rules in mind as described in section 5.2. 5 Add a MasterBus control panel to the MasterBus network. 3.3.2 Required materials (Serial connection 48V, one charger for two batteries) Quantity Mastervolt Description @ 12V @ 24V Part number n -- 66012500 Li-ion Battery MLi Ultra 12/2500 1 -- 66015000 Li-ion Battery MLi Ultra 12/5000 -- 1 66025000 Li-ion Battery MLi Ultra 24/5000 1 1 77031500 Digital AC 1x6A 1 -- 79007700 Safety relay 12V/500A, part # 7700 -- 1 79007702 Safety relay 24V/500A, part # 7702 1 1 77049000 500A Fuse to protect the DC Main Wiring* 1 1 778T2S600 T-Fuse holder for 77049000 1 1 MasterBus control panel (see single battery manual section 6.2) ** ** DC Main Wiring, with Main Fuse depending on system current ** ** Wiring for the safety relay control circuit, minimum cross section: 0.5mm² ** ** MasterBus communication cables *Any other fuse can be applied as long as the voltage/current ratings are fitting the installation and the IR (Interrupt Rating) of the fuse is at least 15000Amps. ** Installation dependent 10Copyright 2013 Mastervolt / August 2013 / Multiple Li-ion Batteries MLi Ultra 12/2500, MLi Ultra 12/5000, Mli Ultra 24/5000 / EN

MULTIPLE BATTERY SYSTEM EXAMPLES 3.3.3 MasterBus configuration (Serial connection 48V, one charger for two batteries) Refer to the single battery manual for explanation of the Stop Charge event. CAUTION! Configuration of the Stop Charge event is mandatory to prevent major damage to the MLi Ultra batteries! Make sure this event is configured for every MLi battery in your system! 3.3.4 Commissioning (Serial connection 48V, one charger for two batteries) During commissioning, first the functioning of the connected cut off relay must be checked. Important is, the relay reacts correctly on a MasterBus event, in this case by operating the buttons in the MasterBus monitoring screen. Further, a wiring check is necessary. This is done by reading the current measured by the battery, in the monitoring screen. Make sure the batteries have approximately equal states of charge before connecting in parallel. Follow next steps. 1 UNLOCK the relay, refer to section 4.8. 2 Enter on the MasterBus control panel the MasterBus MLi Ultra monitoring page. Operate the Close Relay button at the bottom of this page. If the relay is closed (On), the knob position must be shifted inwards. See figure 3-8. 3 Operate the Open Relay button. If the relay is open (Off), the knob position must be outwards. Keep the relay open. 4 Install all fuses. 5 Switch On the load. 6 Verify on the MLi Ultra monitoring page that there is no current flow. See figure 3-9. 7 Close the relay and verify that a current is flowing out of the battery (negative value). 8 Switch Off the load, switch On the charger and verify that a current is flowing into the battery (positive value). 9 If necessary, check if the battery is in MasterBus Powering mode. See single battery manual section 8.1 Configuration: MasterBus Power. 10 If necessary, remove the MasterBus control panel from the MasterBus network. Figure 3-8: Buttons for closing and opening the relay Figure 3-9: Checking zero current EN / Multiple Li-ion Batteries Mli Ultra 12/2500, MLi Ultra12/5000, MLi Ultra24/5000 / August 2013 / Copyright 2013 Mastervolt 11

MULTIPLE BATTERY SYSTEM EXAMPLES 3.4 SERIAL CONNECTION MAXIMUM 10 BATTERIES 3.4.1 Schematic installation (Serial connection, maximum 10 batteries) MasterBus cabling depends on your system setup. Refer to the MasterBus section in your single battery manual. Figure 3-10: Serial connection, 1 charger per battery, maximum 10 batteries 1. MasterBus compatible charger 2. Fuse in positive charger line 3. Fuse in minus DC line 4. Fuse for every two batteries 5. Fuse in positive DC line 6. Safety relay suitable for the voltage Follow next steps to install the safety relay: 1 Move the safety relay in the LOCK OFF position. See single battery manual section 4.8. 2 Connect the DC main wiring as indicated but do not place the Main fuse yet. 3 Connect the wiring for the control circuit of the safety relay as indicated. 4 Connect the MasterBus cabling between the devices as indicated. Keep the rules in mind as described in single battery manual section 5.2. 5 Add a MasterBus control panel to the MasterBus network. 3.4.2 Required materials (Serial connection, maximum 10 batteries) Quantity Mastervolt Description @ 12V @ 24V Part number n -- 66012500 Li-ion Battery MLi Ultra 12/2500 n -- 66015000 Li-ion Battery MLi Ultra 12/5000 -- n 66025000 Li-ion Battery MLi Ultra 24/5000 n n ** Mass Charger 1 1 500A Fuse to protect the DC Main Wiring * 1 1 MasterBus control panel (see single battery manual section 6.2) ** ** High voltage safety relay ** ** DC Main Wiring, with Main Fuse depending on system current ** ** Wiring for the safety relay control circuit, minimum cross section: 0.5mm² ** ** MasterBus communication cables n number of MLi batteries * The voltage/current ratings must fit the installation and the IR (Interrupt Rating) of the fuse must be at least 15000Amps. ** Installation dependent 12Copyright 2013 Mastervolt / August 2013 / Multiple Li-ion Batteries MLi Ultra 12/2500, MLi Ultra 12/5000, Mli Ultra 24/5000 / EN

MULTIPLE BATTERY SYSTEM EXAMPLES 3.4.3 MasterBus configuration (Serial connection, maximum 10 batteries) Refer to the single battery manual for explanation of the Stop Charge event. CAUTION! Configuration of the Stop Charge event is mandatory to prevent major damage to the MLi Ultra batteries! 3.4.4 Commissioning (Serial connection, maximum 10 batteries) During commissioning, first the functioning of the connected cut off relay must be checked. Important is, the relay reacts correctly on a MasterBus event, in this case by operating the buttons in the MasterBus monitoring screen. Further, a wiring check is necessary. This is done by reading the current measured by the battery, in the monitoring screen. CAUTION! To prevent a high compensation current, make sure the batteries have approximately equal states of charge before connecting in parallel! Follow next steps. 1 UNLOCK the relay, refer to section 4.8. 2 Enter on the MasterBus control panel the MasterBus MLi Ultra monitoring page. Operate the Close Relay button at the bottom of this page. If the relay is closed (On), the knob position must be shifted inwards. See figure 3-11. 3 Operate the Open Relay button. If the relay is open (Off), the knob position must be outwards. Keep the relay open. 4 Install all fuses. 5 Switch On the load. 6 Verify on the MLi Ultra monitoring page that there is no current flow. See figure 3-12. 7 Close the relay and verify that a current is flowing out of the battery (negative value). 8 Switch Off the load, switch On the charger and verify that a current is flowing into the battery (positive value). 9 If necessary, check if the battery is in MasterBus Powering mode. See single battery manual section 8.1 Configuration: MasterBus Power. 10 If necessary, remove the MasterBus control panel from the MasterBus network. Continue with chapter 8. Figure 3-11: Buttons for closing and opening the relay Figure 3-12: Checking zero EN / Multiple Li-ion Batteries Mli Ultra 12/2500, MLi Ultra12/5000, MLi Ultra24/5000 / August 2013 / Copyright 2013 Mastervolt 13

ORDERING INFORMATION 4 ORDERING INFORMATION Part number Description 66012500 Li-ion Battery MLi Ultra 12/2500 66015000 Li-ion Battery MLi Ultra 12/5000 66025000 Li-ion Battery MLi Ultra 24/5000 79007700 Safety relay 12V/500A, part # 7700 79007702 Safety relay 24V/500A, part # 7702 77031500 Digital AC 1x6A 77049000 500A Fuse to protect the DC Main Wiring* 778T2S600 T-Fuse holder for 77049000 77030450 MasterBus Serial Interface 77010305 MasterView Easy MkII 77010400 MasterView System panel 77030100 MasterBus USB interface, required as interface between your PC and the MasterBus network 77040000 MasterBus terminator for the MasterBus network 77040100 MasterBus connection cable 1,0m / 3.3ft 77040300 MasterBus connection cable 3,0m / 10ft 77050000 Complete set to assemble MasterBus cables. Delivery includes: 100m / 330ft MasterBus cable, 50 pcs. modular jacks and crimping tool 14Copyright 2013 Mastervolt / August 2013 / Multiple Li-ion Batteries MLi Ultra 12/2500, MLi Ultra 12/5000, Mli Ultra 24/5000 / EN

TECHNICAL INFORMATION 5 TECHNICAL INFORMATION MULTIPLE BATTERIES 5.1 SPECIFICATIONS Model MLi Ultra 12/2500 MLi Ultra 12/5000 MLi Ultra 24/5000 Article number 66012500 66015000 66025000 Maximum number of batteries in parallel No maximum No maximum No maximum Maximum number of batteries in series Using the balance line 2 2 2 Using one charger per battery 10 10 10 EN / Multiple Li-ion Batteries Mli Ultra 12/2500, MLi Ultra12/5000, MLi Ultra24/5000 / August 2013 / Copyright 2013 Mastervolt 15

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