The 18650 Button Top Li-Ion battery provides an alternate power source for Streamlight products that accept either standard CR123 lithium batteries or 18650 button top batteries. The two bay 18650 Button Top battery charger can recharge one 18650 battery in as little as 3.5 hours, or two batteries in as little as 6.5 hours. The charger features input power sources, accepting 12VDC power. Dual input power sources provide a wide variety of battery charging options when a wall outlet is not available, such as a PC, power pack or 12VDC automotive power. This kit contains the 120 V AC Charger Kit Only.