Common battery damaged are: 
1 When you start the battery voltage is low, a few tenths of volts to 2V, the battery generally sentenced to death, even for a long time do not increase the charging voltage, capacity is almost zero; 
(2) The initial voltage without exception, but when charging, the voltage can not reach termination voltage settings, and hold a long charge, charging grams often reach hundreds or even thousands of capacity mAh per gram, but can not discharge; 
3 The second case was a long time to charge or discharge can also be forced to play a more normal discharge capacity, but subsequent cycles will suddenly diving capacity is zero. 
Apart and found no significant cell membrane damage or short circuit due to the positive and negative pole piece misaligned and cause, what causes of damage to the several batteries What is it? 
In the positive and negative materials, production processes and test batteries have the same format, the test results are often the same batch battery high and low, the nature of the relationship between this volatility and greater cathode material itself or the affected cells produced more big?