The battery receives electrical energy from the external circuit and converts it into the chemical energy of the battery. After the battery energy is consumed by discharge, it can be restored by charging, and it can be re-discharged to form a charge discharge cycle. Generally charged with DC current (also useful asymmetric AC current or pulse current).
In different cases, different charging methods are used, such as constant current charging, constant voltage charging, floating charging, trickle charging, rapid charging or the combination of these methods.
According to the formula of power = voltage * current * time, in the case of fixed power, the charging time can only be shortened by increasing the voltage or increasing the current.
Matters need attention:
1. The working choice of the charger should be consistent with that of the charged battery. If the charger works in the lithium battery state and is charged with nickel-metal hydride or nickel-cadmium batteries, the battery is not charged, which will greatly reduce the working time. If the charger works in the nickel battery state and recharges the lithium-ion battery, the lithium battery is overcharged, which will seriously affect the life of the battery.
2, to understand whether the battery is really full when the charger is full. Some chargers can remove the lithium battery when the full indicator light is on, and some chargers can remove the battery only when the indicator light is fully on.
