Key Specifications/Special Features:3-stages charging modes:Constant current (2.0A)Constant voltage (14.3 to 14.7V)Floating voltage (13.5 to 13.8V)LED indicate charging status:Red: in chargingGreen: fully chargedSafety protections:Short-circuit protectionBattery polarity error protectionOver-voltage protectionLead-acid battery packSuitable for 12VInput power supply: 100 to 240V AC, 50 to 60Hz/1.0AOutput voltage: 12V DCCharging current: 2,000ADimension: 74.0 x 28.0 x 42.0mmNo drain current from the battery when AC is offCertificate: UL1310 CE FCC part15,SAA&C-TICK listing2 YEAR WARRANTYA Must for Motorcycle, LAwn, ATV, PWC, Auto and More