Description:Low voltage protectionOver current protectionOverheat protectionShort circuit protectionReverse connection protectionSpecification:Dimension: Approx. 21 x 16 x 8.7cm/8.27 x 6.30 x 3.43''Clip Wire Length: 60cmPower Cable Length: 120cmInput Voltage: 110V-250VOutput Voltage: 12V/24VFrequency: 50-60HZPlug: US PlugApplication: best suitable for 400AH lead acid batteries(including wet and 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 and battery charger;Constant Voltage Mode: advanced pulse width modulation (PWM) technology, control the charger's current and 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 and small current to battery;Trickle Charge Mode: when the battery voltage and current is approaching the set voltage and 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 Charger1 X Power Charger2 X Clip1 X User Manual