1）Battery is not fully charged, such as inadequate charge time, lower charge efficiency and so on.
2）Excessively heavy discharge current will result shorter discharge time of low discharge

1）Charger or charge circuit does not matched to battery system.
2)  The battery protectors didn’t design the over charge and over discharge voltage in reason.
3）Long time

If different capacity cells or mixing fresh and old cells were used, leakage or zero voltage would occur. That is because when charge, some cells with high capacity cannot be fully charged, while t

If the application is not in use for an extended period of time it is better to remove the battery from the application and to store in a dry and cool place. If this is not done, a minimum amount o

As tradition and design of the cordless phone,the hanset need to replace on The cordless phone every time after usage.It can activate the battery,charge the lost of capacity during usage and lost o

In accordance with IEC, the cell should be stored under temperature 20℃±5℃ and humidity （65±20）%. Commonly temperature is higher, while capacity retention is lower, and vice versa. Th

On theory energy loss can’t be avoided during store. Its proper electrochemistry construction makes the losing unavoidable. Self-discharge is the best-known causation. Generally this has to d

Any kinds of conductive material being bridged with the external terminals of a battery will result in short circuit. Based on the battery system, a short circuit may have serious consequences, e.g

1）Batteries are external short-circuited or overcharged, reverse charged (forced over-discharge)
2）Continually being overcharged at high rate current will cause electrode pole expand and po

1）One of the cells voltages is 0V.
2）Plugs are short or open circuit, or ill touched.
3) Lead wires are broken from the soldering or weakly soldered.
4）Wrong battery connect

1）0V cell or 0V cell in packages.
2）Wrong battery connection, or abnormity inner parts or circuit protector
3）Charger is failure to output current.
4）External factors can be

1）Storage will shorten its service life.
2）Not be fully charged or not be charged;
3）Excessively low ambient temperature;
4）Low discharge efficiency, for instance at high cu

Continue to charge is an overcharge procedure when a battery has been fully charged. At this time the Ni(OH)2 of positive electrode had become NiOOH, the battery voltage reaches a balance value(max

1）Batteries are overcharged especially at continuous high rate current.
2）Batteries are forced to over discharge.