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Battery only balances while being charged, 46mA of balancing current is low, and BMS high temp disconnect is 120°C/248°F which is too high.
Very low balancing current of 35mA, and measured even lower at 18mA. Battery could not charge to 14.2V after 3 days in absorption. Cells are 324Ah, not 340Ah as advertised.
Balancing current of 35mA is too low and that explains why people mention it doesn’t hold a charge after a while. It becomes impossible to balance, especially when balance start voltage is set to 3.525V. The BMS lets the cell discharge to 2.3V (should be 2.5V minimum). The mosfet high temperature is set to 105°C (221°F)! The build quality was okay, but there were no spring washers and the glue was not correctly applied to the main battery terminals.