Fenix ARB-L18-3500U Built-in USB

ARB-L18-3500U is a high capacity 18650 Li-ion 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. This battery can quickly be charged without the need for a separate charger.  This not only save you money from purchasing a charger, but also convenience of not having to carry around another device.  This will work in all of the models that utilize the standard Li-ion 18650, including best sellers like the PD35, PD35Tac, TK20R, TK75, TK15UE, etc.

Features:

• Micro-USB charging port
• 3500mAh high capacity
• 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