Fenix ARB-L21-5000U USB-C Rechargeable Battery
A rechargeable 21700 Li-ion battery with 5000 mAh capacity and 3.6 V output. It is made as a spare or replacement battery for compatible Fenix lights.
Battery and compatibility
The battery is designed for lights that support the 21700 format. Charging is handled by the built-in USB-C port or a compatible charger. The built-in USB-C port allows direct charging without a separate charger. Compatible products include Fenix lights that use 21700 batteries.
Safety and handling
Built-in protection circuitry helps reduce the risk of short circuit, overcharge, over-discharge and overheating. The protected construction is made for normal use in compatible Fenix products.
Highlights
- Product type: rechargeable 21700 Li-ion battery
- Capacity: 5000 mAh
- Voltage: 3.6 V
- Charging current: 1 A recommended, 5 A maximum
- Charging: built-in USB-C port
- Compatibility: Fenix lights that use 21700 batteries
- Weight: 72.5 g
- Size: 76 x 21.5 mm
- Warranty: 12 months from date of purchase
Fenix Lighting covers this battery with a 12-month warranty from date of purchase.





