... /30A battery charger : 1,Ac input: 110Vac or 220Vac as per customers' required, or we can make 110V/220V voltage selector for charger can ... use both 110Vac and 220Vac.2,Efficiency: 85%-90%.3,Cooling need a fan.4,Automatic,Advanced ,high ... - +60 .Please send me inquiry,any questions about 36V/30A battery charger. 36Volt 30Amp Lead-acid ...