Fenix ARB-L18-3500U USB Rechargeable Battery

Fenix ARB-L18-3500U USB Rechargeable Battery - ARB-L18-3500U 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, including best sellers like the PD35 V2.0, PD35TAC, TK20R, TK75, TK15UE, and more
• A micro-USB charging cord is NOT included
• 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
• Size: Length: 2.8in, Diameter: 0.7in
• Warranty Period: 12 month from date of purchase
• Indicator light on battery is red while charging, blue when charged