Fenix ARB-LP21 Power Extender
A power extender for the Fenix HM75R headlamp, built around an included 5000 mAh 21700 battery. It adds extra runtime and can also work as a compact USB-C power bank.
Power and compatibility
The ARB-LP21 is made for the HM75R Power Xtend system. It holds an ARB-L21-5000 V2.0 battery and connects to the headlamp with the Power Xtend cable. It can also charge other devices through USB-C, with up to 18 W discharging.
Handling and durability
The unit has USB-C fast charging, a belt clip and IP68 protection. Fenix lists a full charge time of about 2.5 hours. It is not compatible with ARB-L21-6000 or ARB-L21-6000B replacement batteries.
Highlights
- Product type: HM75R power extender
- Battery: included ARB-L21-5000 V2.0, 5000 mAh
- Charging: USB-C fast charging
- Power bank function: up to 18 W discharge
- Durability: IP68 protection
- Compatibility: Fenix HM75R
- Not compatible with: ARB-L21-6000 or ARB-L21-6000B replacement batteries
Fenix Lighting covers this battery with a 12-month warranty from date of purchase.
What's in the box
- Fenix ARB-LP21 power extender
- ARB-L21-5000 V2.0 battery
- USB Type-C charging cable
