BATTERY CHARGER USING RELAY

摘要

PURPOSE: A variable battery charger using a relay is provided to output charging power having multiple levels, thereby charging batteries having different capacities with variable output power. CONSTITUTION: Multiple unit rechargeable batteries(110,110a) are charged by power. A relay circuit(120) is respectively positioned between the unit rechargeable batteries. The relay circuit connects the unit rechargeable batteries in a parallel or serial manner according to the capacity of the unit rechargeable batteries. The relay circuit outputs output power having multiple levels. A total number of the relay circuits is one less than the number of the unit rechargeable batteries.