SureFire SF18650B Rechargeable Micro USB Lithium Battery 3.6V Li-Ion 3.5 mAh 3,500 mAh Charges w/Micro USB

The Surefire high-performance 3.6V 18650 lithium ion rechargeable battery with MICRO-USB port for ease of charging no charging cradle needed. When plugged into a power source, two LED indicators display the current charge state: Red for charging and Green for fully charged. 8-10A discharge rate for dependability in high drain devices such as LED flashlights.