Dual-Voltage 6-Volt and 12-Volt Lead-acid and Lithium-ion batteries Automatic Battery Charger & Maintainer Charge, Maintain and extend the battery life Quick Disconnect Harness Easy connection to vehicle battery using battery clips or O-ring terminals. THBM-3.5LI Dual Voltage Charger & Smart Battery Maintainer Specifications: AC Input Voltage: 110V~ 120VAC 60HZ Effectiveness: 80% Power: 45W Max Charging Voltage: Various Recharging Current: 3500mA(6V) 3500mA(12V) Low Voltage Detection: 2V(6V) 2V(12V) No Load Current: ≥ 0.5mA Ambient Temperature: 0°C to +40°C Charger Type: 8-Stage Smart Charger Battery Voltage: 6V, 12V Battery Type: Wet, Gel, MF, CA, EFB, AGM, Lithium Battery Capacity: Less than 60AH, Can support all battery sizes. Shell Protection: IP60 Cooling: Natural Cooling Product Summary: Bar Code Number: 852090008875 Packaging: Box Dimensions: 6L x 2.8W x 1.7H”