Battery Current Disappears when Charging. Possible Causes:
- Inverter/Charger low voltage disconnect set too low, below BMS disconnect.
- The battery has overheated or is too cold, triggering temperature protection.
- One or more internal cells is out-of-balance, resulting in a cell reaching the low voltage disconnect.
First, verify inverter/charger settings for low voltage disconnect are verified to be correct for the given battery. Monitor battery temperature, ensure ambient temperature is within safe operating range and no heating is occurring at the terminals. If no other symptoms can be identified and the problem persists, allow the battery to stay at the absorption/constant voltage limit for 48 hours to rebalance cells.