Overview: Input:12V DC, 800m A Output:3.7V/8.4V, 800m A This Charger can charge 1 piece of 3.6/7.2V li-ion battery. The LED shows all the charging process directly. Charging by IC control, with â-³V intelligent cut off the rapid charging function, insure the battery can be fully charged, & not be overcharged, safe for usage. Over-current protect, constant current charging can avoid the affect from the current's undulation, insuring the safe for usage. The timer will control the logest charging time strictly to insure the safe for usage while the battery is fully charged (≥80%) Auto-identify function, identify the polarity & the voltage of battery, then the charger will charge the battery & defective battery, insuring the safe for usage, the charger will not charge those battery. Short-circuit protection: avoide the batery polarity " /-" short-circuit protect.DC input, suitable for using in door or in the parking. Cable length of the AC adapter:135cm Using Instruction:1. Open the charger's plate, put the battery in the plate, & adjust the charger's pole piece to catch the battery's polatity, please insure the touchment is good, otherwise tha charger won't work.2. After connecting the power, the charger examine by itself, the LED there is no indication when the charger is stand by. The charger will charge after loading the battery. During the charging process, the LED in red & the corresponding battery. If the battery is defective, there will be no indication, please insure that the battery has been loaded correctly & the batery is good for using.3. When the battery is fully charged, the LED will in green. Specification: Product Weight Approx:815g Product Size Approx:10.5 x 6.2 x 3