The Fenix ARB-L16-700UP features 700mAH current charging capacity and advanced protection circuit for superior safety performance. This 16340 Battery has a heavy load discharge rate of 3.5C and a reliable output of 2.5A. With over 500 recharge cycles, it eliminates the need for non-rechargeable alternatives. Compatible with various lights such as flashlights, headlamps, bicycle lights, and lanterns, it can be powered via the integrated micro-USB port or a Fenix battery charger. Plus, it boasts three levels of overheat protection for added security. Note: This item is packaged and priced for one single battery. Shipping Note: Lithium ion batteries are considered "dangerous goods" per US transportation regulations and can often only be transported via ground shipment. Orders containing loose batteries will typically take much longer than predicted to be delivered. Delivery times of 14+ days are common.