battery charger model:GCA series commutate bettery charger input voltage : 220 V or 380V ... ,5A,10A,20A,300A BETTERY CHARGERGCA series commutate battery charger is composed with rectifier transformer,bridge type controlled ... 36V,48V,60V,72V,110V,120V,220VFrequency50/60HZTransfer efficiency≥90%Operation modeContinuously for ling periodStanderd charging10% of the battery capacity is best battery charger ...