Fenix ARB-L21-6000 Rechargeable Battery

The ARB-L21-6000 is a high-capacity 21700 Li-ion rechargeable battery engineered to deliver exceptional power and extended runtimes for your devices. With a massive 6000mAh capacity and a 10A maximum output, this battery ensures your gear stays powered up for longer, even under demanding conditions. Built-in protection circuitry prevents short circuits, overcharging, and overheating, while pressure relief vents ensure added safety. Even after 500 charge cycles, this robust battery maintains 75% of its original capacity, guaranteeing reliable power for years to come.

Please note that the ARB-L21-6000 battery does NOT have the capability of being used as a power bank.  The power bank capability is ONLY available in the ARB-L21-6000B battery

This battery is NOT compatible with lights that use an 18650 battery, and older chargers including the Fenix ARE-A2, ARE-A4 and ARE-X1 2.0. It is compatible with the Fenix ARE-D1 and ARE-D2 chargers.

Additionally, this battery is NOT compatible with the Fenix E35R purchased prior to 2025.