marionw
Solar Addict
The EG4 LifePower4 batteries employ two RS485 buses in the RJ45 jacks. Pins7&8 are used by the "Master" battery (Or EG4 Communications hub) to communicate with the other batteries in the bank. Pins 1&2 are used by the BMS_Test software to monitor the battery(ies) or for communication with an inverter in closed loop. You can only have one "Master" connected and active on an RS485 bus so you must disconnect from the BMS input on the inverter if you are going to use the BMS_Test software (use pins 1&2).
The latest firmware for the batteries is v3.37 which you can download from the EG4 website. In addition Signature Solar can provide you with a firmware update tool. You should get all batteries updated to the latest firmware
I have successfully updated firmware on six batteries with no changes to the batteries address or disconnecting the communication cables between batteries. Just select the correct "Device Address" in the "Upgrade operation" box on the "ProgramUpdate" tab. You might have to click the "Get Boot information" a couple of times.
The BMS_Test software screenshot provided earlier in this thread indicates a "Pack" Charging Overcurrent alarm and not a Cell1 overcurrent protection. As the battery is charging the cell with the highest voltage will be indicated in red and the cell with the lowest voltage will be indicated in green. These will constantly change during the charging process. If there is a "cell" alarm or protection issue the text will also include "cell"
Isolate the battery, disconnect from all the others including the communications cables. Connect the BMS_Test cable (pins 1&2) to the battery and use you charger to charge. Can you set the max charge voltage and/or max charge current on the charger. Is so try to gently charge the battery by starting out with a low charge voltage and slowly increase until you get 5 or so amps of charging current. Screenshots of the BMS_test will help.
The latest firmware for the batteries is v3.37 which you can download from the EG4 website. In addition Signature Solar can provide you with a firmware update tool. You should get all batteries updated to the latest firmware
I have successfully updated firmware on six batteries with no changes to the batteries address or disconnecting the communication cables between batteries. Just select the correct "Device Address" in the "Upgrade operation" box on the "ProgramUpdate" tab. You might have to click the "Get Boot information" a couple of times.
The BMS_Test software screenshot provided earlier in this thread indicates a "Pack" Charging Overcurrent alarm and not a Cell1 overcurrent protection. As the battery is charging the cell with the highest voltage will be indicated in red and the cell with the lowest voltage will be indicated in green. These will constantly change during the charging process. If there is a "cell" alarm or protection issue the text will also include "cell"
Isolate the battery, disconnect from all the others including the communications cables. Connect the BMS_Test cable (pins 1&2) to the battery and use you charger to charge. Can you set the max charge voltage and/or max charge current on the charger. Is so try to gently charge the battery by starting out with a low charge voltage and slowly increase until you get 5 or so amps of charging current. Screenshots of the BMS_test will help.