Universal AC Power Adapter LED Charging Indication 3.7V /8.4V Lithium Ion Li-ion Battery Charger LED charging indication Intelligent controller, automatically identify 3.7V or 8.4V battery Automatically switch the two electric polars Charging can be done with bundled power adapter (100-240V AC), car cigarette lighter (12V) AC Power Adapter Output (US Plug): 12V~800mA