Faulty charger question

[KirstinS]

Hi all

Has anyone ever come across a situation where a charger reads 42v but is the cause of bms failure on successive batteries ( identical,)

Thanks

 

[trex]

are you sure? the charger is rarely the cause of BMS failures. The BMS should cut off the charging current when the cells reach its set voltage (4.1V).

 

[patpatbut]

Agree above. BMS cut off if the cell voltage is too low or too high in order to protect the healthy cells. 42v is normal for Li-ion charger