Generally, detecting problem batteries in problem modules mainly relies on the following points:
1. Appearance, possible leak. Flatulence. Problematic battery cells sometimes have obvious side effects, and the battery cell has obvious appearance abnormalities;
Battery bulge
2. tension. This can be measured with a multimeter.
3. Internal resistance. If solder breaks or other reasons occur inside the battery, it will also obviously be reflected in the internal resistance of the battery.
It is actually not recommended for ordinary people to deal with battery failure, because the electrolyte inside the battery poses certain dangers. If not disassembled properly, it may catch fire or even explode.
In addition, voltage and internal resistance testing generally examines outliers. The cellsThe batteries in question generally have a significantly lower voltage and a significantly higher internal resistance.