This is a 36V Sealed Lead Acid Battery Charger,SLA AGM GEL VRLA Battery Charger with Fuel Gauge,MCU Control,With Recovery Function. Input: 100-240V AC Output:41.4V 1.8A Designed For: 36V Lead acid battery(VRLA,AGM,GEL) With 5 LEDs to display the battery fuel gauge status Protection Functions: Short-circuit,Reverse Polarity ... Charging Process: Ud-Im-Uo-Up(Auto Stages) Safety Approval: CE UL TUVus Size: 170x71x41mm Note: Please kindly ensure your battery match the charger before you start to charge it, usually each battery should have a sticker, please kindly check and confirm it is lead acid battery (VRLA,AGM,GEL),and the voltage of the battery match the charger.