This battery, little used, mostly stored, refused to charge and had only about 5V output voltage. A replacement is very expensive, circa £400 so I decided to see what what was going on.
I dismatled the battery and checked the voltage of each group of four parallel cells. They were all between 3.4V and 3,7V so that seems OK. Does this mean that the problem is in the BMS?
It uses an SH367107X chip and six HY4306 N-channel MOSFETs. I cannot find an english datasheet for this chip so checking it is difficult/impossible.
Help please!
[Edit] The cells are 18650 marked as 2500 mAh
I dismatled the battery and checked the voltage of each group of four parallel cells. They were all between 3.4V and 3,7V so that seems OK. Does this mean that the problem is in the BMS?
It uses an SH367107X chip and six HY4306 N-channel MOSFETs. I cannot find an english datasheet for this chip so checking it is difficult/impossible.
Help please!
[Edit] The cells are 18650 marked as 2500 mAh
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