Fenix 18650 3500mAh Rechargeable Battery

The Fenix battery was upgraded with a built-in USB port for convenient charging. It features a protective circuit built into the anode and covered with a riveted steel hat along with being fully covered with a steel shell. The battery also includes pressure relief vents that expel waste gas in the rare case of an internal short circuit preventing an explosion. Features: Fenix ARB-L18-3500U mAh USB Rechargeable 18650 Battery Micro USB charging port lets you charge the battery directly Button-Top Design Protection circuit built in the anode with a riveted steel hat. Riveted steel shell eliminates the risk of short circuit caused by collision and impact. Pressure Relief Vent: Expels waste gas generated by internal short circuit. Expelling waste gas prevents a cell from inflating or exploding. Three Sets of Over-Heat Protection: Overcharge protection, Over-discharge protection, Short-circuit protection, and overheating protection 500 Charge Cycles: A properly maintained ARBL18 battery