FENIX ARB-L16-800UP BUILT-IN USB-C RECHARGEABLE BATTERY

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Prices last checked August 19, 2026 across 1 retailer.

The Fenix ARB-L16-800UP Built-in USB-C Rechargeable Battery is a 16340 Li-ion battery with a protection circuit in the anode to help prevent short circuits, overcharge/discharge and overheating. This battery has its own USB Type-C charging port for quick/easy charging without the need for a separate charger. The battery also includes multiple levels of protection including overcharge protection, overheat protection, and pressure relief vents which expel waste gas in the rare case of an internal short circuit preventing an explosion. It is designed to work with: PD25R, LD15R, E18R V2.0, and HM50R V2.0. A USB Type-C charging cord is NOT included. Specifications of the ARB-L16-800UP Built-in USB-C Rechargeable Battery Size: 16340 Button Top Battery 800mAh Nominal Capacity 3.6V Nominal Voltage Charging current: 0.6A Charging current by USB port: 0.5A Protection Circuit in the Anode to prevent short circuit Multiple layers of protection 500 charge cycles can be expected from a properly maintained battery Fully covered with a steel shell for impact resistance Overcharge, discharge, short circuit, and overheating protection Three sets of over-head protection: Pressure relief valve protection, separate microporous protection, and PTC cathodal block protection Weight: 0.66 ounces (18.8g) Size: Length: 1.38″ (35mm) Diameter: 0.66″ (16.7mm) 12 months free warranty from date of purchase Indicator light on battery is red while charging, blue when charged

FENIX ARB-L16-800UP BUILT-IN USB-C RECHARGEABLE BATTERY price comparison: the lowest price is $16.24 at Barbarossa TacticalShop, and the median across 1 tracked listing is $16.24.