This AC/Car lithium battery charger is specifically designed for 18650. With this charger and the 18650 rechargeable batteries you can charge your 18650 battery via AC socket or car cigarette lighter to save a lot of money. Via using the rechargeable battery and charger you make a great contribution to the environment. This battery charger is necessary for your devices using the 18650 battery. - Powered by AC 100V~240V (US Plug)/DC 12V - Input: 100~240V 50/60HZ - Output: DC4.2V 600mAh - Charges: 2*18650 batteries - Automatically stops when charging is complete - LED indicator shows current charging status