1,Sealed Lead-acid battery charger 2,Switching Mode Power Supply,MCU control . 3,DC: ... 48V,20A. 4,CE Certification General Features for 48V/20A battery charger : 1,Ac input: 110Vac or 220Vac as per customers ... charging voltage as per customers different kinds of lead-acid battery.10,Operating temperature:0-50 ,Storage temperature:-10 - +60 . Please ...