Description: Low voltage protection Over current protection Overheat protection Short circuit protection Reverse connection protection Specification: Dimension: Approx. 21 x 16 x 8.7cm/8.27 x 6.30 x 3.43 Clip Wire Length: 60cm Power Cable Length: 120cm Input Voltage: 110V-250 V Output Voltage: 12V/24 V Frequency: 50-60HZPlug: US Plug Application: best suitable for 400AH lead acid batteries (including wet & dry) Introduction of 5-stage mode: No-load Mode: when there has no load connected with charger, the LED Screen will show voltage only, the power is about 2W; Constant Current Mode: means the battery voltage is lower than the set voltage of charger, then the charger supply constant charging current to maintenance both battery & battery charger; Constant Voltage Mode: advanced pulse width modulation (PWM) technology, control the chargers current & output voltage accurate, avoid overcharge; Float Charge Mode: when the battery is going to be charged full, the charger will stop charging, but still supply constant floating voltage & small current to battery; Trickle Charge Mode: when the battery voltage & current is approaching the set voltage & current, it will turn to trickle floating charge from automatic mode, it means charge full, also can be charged with floating mode. Package Included:1 X Car Battery Charger 1 X Power Charger 2 X Clip 1 X User Manual