SureFire - Flashlights Li-Ion Battery with Micro-USB Charging Port, 3500mAh

Power small electronics including LED flashlights, lanterns, headlamps, and other compatible devices with the SureFire 18650 Li-Ion Battery with Micro-USB Charging Port. It can be charged with the included USB-A to micro-USB cable or in a standard 18650 charger. The battery provides 3.6V of output power with a capacity of 3500mAh, resulting in a 12.6Wh energy consumption rate to power high-drain devices like LED flashlights for up to ten hours. To protect it from damage it comes with overcharge and over-discharge circuitry.