This Fenix USB Rechargeable battery is a high capacity 18650 Li-ion USB rechargeable battery with a built-in micro-USB charging port. It also includes a protection circuit in the anode to help prevent short circuits, over charge/discharge and over heating. These USB rechargeable batteries can quickly be charged without the need for a separate charger. This not only saves you money from purchasing a charger, but also provides the convenience of not having to carry around another device. This will work in all of the current models that utilize a li-ion 18650 battery. A micro-USB charging cord is NOT included.

Features

• Micro-USB charging port
• 3500mAh high capacity
• USB rechargeable batteries
• Protection circuitry to prevent short circuits
• Pressure vents to prevent explosions
• 500 charge cycles
• Voltage: 3.6V
• Charging Current: Recommended 1A, maximum 2A
• Charging Current USB Port: 0.8A
• Weight: 1.8 ounces (50.2g)
• Size: Length: 2.8"(70mm) Diameter: 0.7"(18.6mm)
• Warranty Period: 12 month from date of purchase
• Indicator light on battery is red while charging, blue when charged