Telecom passes signals of voices. If AC power is used, the voice line will have a disturbance that can disrupt the communication; on the other hand, there is no such limitation in DC power. DC power is not restricted to frequency variation or leading power factor. Also, DC power can be stored; thus, Read More

The battery charger must have the same voltage as the battery, i.e. 12 V battery voltage = 12 V battery charger. 24 V battery voltage requires a 24 V battery charger;48 V battery voltage requires a 48 V battery charger;110 V battery voltage requires a 110 V battery charger;220 V battery voltage requ Read More