Charge. Win. Repeat. The SF18350 is a Lithium Ion-protected 18350 battery with MICRO-USB charge capability. This allows the user to conveniently charge the battery using any USB power source such as a USB wall charger, computer/laptop, power bank, or automotive USB port using the included MICRO-USB to USB cable. Note: The SF18350 is compatible with SureFire Dual Fuel, single 123A-powered products. It is not compatible with non-Dual Fuel, single 123A-powered products.High-performance 3.7V 18350 lithium ion rechargeable battery with MICRO-USB port for ease of charging - no charging cradle neededWhen plugged into a power source, two LED indicators display the current charge state: Red for charging and Green for fully charged1,100 mAh for extended battery runtime8-10A discharge rate for dependability in high drain devices such as LED flashlights