The Internal Resistance of Battery Pack is Large

1. Testing equipment problems. If the detection equipment caused by if the test accuracy is not enough, should use the AC bridge method principle test internal resistance instrument detection.

2. Long storage period lithium battery storage time is too long, resulting in excessive capacity damage, can be charged and discharged several times to activate the battery.

3. Use environment. Long-term heat / cold, or uneven heat / cold. Ambient humidity is too high, etc.