... Power Supply,MCU control . 3,DC: 12V,25A. 4,CE Certification General Features for 12V/25A battery charger : 1,Ac input: 110Vac ... 110Vac and 220Vac.2,Efficiency: 85%-90%.3,Cooling need a fan.4,Automatic,Advanced ,high frequency,swich mode design allows ... temperature:-10 - +60 .Please send me inquiry,any questions about 12V/25A battery charger. 12V/25 A Lead-acid Battery Charger