Specification Housing Material: Metal Voltage Range: 110V-250V Product Size: 18*14.5*7cm/7*5.7*2.8inch Rated Power: 400W Working Temperature: -30 ℃ - + 50 ℃ Working Mode: Precharge-constant, Current-constant, Voltage-trickle The Actual Output Current (12V Battery): About 30A The Actual Output Current (24V Battery): About 15A Package Included 1 x Car Battery Charger 1 x Power Cable 2 x Battery Clamps 1 x Red Clamp Wire (Anode) 1 x Black Clamp Wire (Negative) 1 x English Manual.