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.

More Information

• Model: ARB-L21-6000
• Capacity: 6000mAh
• Voltage: 3.6V
• Charging Current: Recommended 1.2A, maximum 4.2A

• Product Compatibility: CL27R, E35R (purchased 2025 or later), HT18R, HT32, LD36R, LD45R, LR35R PRO, LR36R, PD36R V2.0, PD40R V3.0, PD45R ACE, TK17, TK21R, TK22R, TK25R, TK30R, WF25RM

• Product is NOT COMPATIBLE with the following lights: BC26R, CL26R PRO, C7, E35R (purchased prior to 2025), LR35R (original), PD36R PRO, PD36 TAC, TK16 V2.0, TK20R V2.0, WF26R, HM70R, HM71R, HM75R Power Extender

What's in the box
1 x ARB-L21-6000 battery