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Blog - LiFePO4
Question: My mistake I discharged my battery pack very low voltage and the cells are misbalanced. I think the RT-BMS system does not work properly. What shall I do?
Deep discharge: please avoid the deep discharge of the battery pack at any case. You need to monitor the battery pack continually to protect against such deep discharge. You should stop using the pack when the voltage gets too low. You should disconnect the pack from the load in case the pack will be left unattended for a longer period of time. You should never operate the equipment with no supervision.
RT-BMS operation: the RT-BMS system CBU modules measuring input is powered from the cell voltage. If the voltage of the cell drops too low, the CBU unit does not work properly. See the BMS instruction document, page 2: „Operating voltage of the measured cell min 1.8V. max 5.0 V“. In fact the BMS units (CBU modules) may not work reliably under 2.0V! The CBU will stop working with 1.8V and less. The BMS cannot report correct values for these under-voltage cells.
Restoration of the battery pack: you need to charge the cells one by one slowly, to restore the capacity and to get the battery pack balanced again. Check the instruction about:
