The reasons for the plate sulfation are as follows:
The battery is undercharged initially or the initial charge is interrupted for a long time;
The battery is not fully charged for a long time;
Failure to charge in time after discharge;
Frequent overcharging or low current deep discharge;
If the electrolyte density is too high or the temperature is too high, lead sulfate will be deeply formed and difficult to recover;
The battery is left for a long time and is not used for a long time without being periodically charged;
The electrolyte is impure and self-discharge is large;
Partial internal short circuit or water on the surface of the battery causes leakage;
The electrolyte inside the battery has a low liquid level, which causes the exposed portion of the plate to be sulfated.