Square dance sound battery can only use one hour, can be repaired? How to repair?

If the original sound with a long time, now with a short time, that is, the capacity of the battery is reduced, can be repaired by replacing the pole plate, if it has been used for a long time, that is, the capacity of the battery is small, this situation is the need to change the high-capacity battery.

Square dance stereo is generally used are storage batteries, this battery can not wait for no electricity and then charging, to be diligent charging, shallow charging, over-discharging and over-charging will seriously affect the service life of the battery, it is best to use the voltage with the battery in line with the kind of charger with charging protection.