Fenix ARB-L21-6000B – 21700 Li-ion high-performance battery with USB-C and power bank function
The Fenix ARB-L21-6000B is an extremely powerful and rechargeable Li-ion battery in 21700 format, specially designed for high-performance devices such as flashlights and headlamps. Thanks to the integrated USB-C port, the battery can be charged conveniently and directly—without a separate charger.
With a capacity of 6000 mAh , the battery offers an exceptionally long runtime, even during energy-intensive use. It can also function as a power bank: simply connect a device via USB-C and charge it on the go – an ideal emergency feature for tours, missions, or travel.
The ARB-L21-6000B delivers a constant output current of up to 10 A and impresses with excellent heat dissipation, ensuring stable performance even under high loads.
Integrated protective functions ensure maximum safety: overcharge, deep discharge, short-circuit, and overheating protection are built in, as are a pressure relief valve and an intelligent PTC protection mechanism. Three integrated LED indicators provide real-time information on the current charge status.
With up to 500 charging cycles at 75% residual capacity , the battery is particularly durable, environmentally friendly, and economical. It is also free of mercury and lead, which minimizes its environmental impact.
Fenix ARB-L21-6000B USB-C battery - Maximum capacity, intelligent technology - your advantages in detail
- 🔋 6000 mAh capacity – almost three times more than conventional 21700 cells, for extended use
- 🔌 USB-C charging port & power bank mode – charging & power supply in one battery with charge level measurement via status LEDs
- ⚡ Max. 10 A discharge current – ideal for high-performance lamps and technical devices
- 🔄 Three flexible charging options – directly via USB-C cable, in an external charger or – on compatible models – directly in the lamp itself.
- 🛡 Multiple protection system – integrated protection circuits against overcharging, short circuits, deep discharge, and overheating, plus pressure relief and PTC protection accents
- 🧰 Guaranteed longevity – up to 500 charging cycles with 75% capacity retention
- 🏋️♂️ Steel housing & sensible dimensions – 77 × 22 mm, 80 g, robust packaging
Your advantages at a glance
- ✔️ Full charge on the go: USB‑C charging cable is all you need – no separate charger required
- ✔️ Replacement power bank: transfers power to other devices in an emergency
- ✔️ Robust & safe: steel body with comprehensive safety design
- ✔️ Versatile: compatible with numerous Fenix lamps
- ✔️ Environmentally friendly: durable and recyclable without harmful substances
Technical data – ARB‑L21‑6000B at a glance
- Brand: Fenix
- Model: ARB-L21-6000B
- Type: Li-ion battery
- Battery size: 21700
- Capacity: 6000 mAh
- Voltage: 3.6 V
- Discharge current: 10 A
- USB-C discharge current: 1.5 A
- Energy: 21.6 Wh
- Charging port: USB-C (integrated)
- Charging current: 2 A (max. up to 3 A)
- Charging time: approx. 4 hours
- Charge cycles: approx. 500 (75% residual capacity)
- Dimensions: 77 mm × 22 mm
- Weight: 77 g
- Protective mechanisms: Overcharging/deep discharge/short circuit/overheating + pressure valve & PTC
Fenix ARB‑L21‑6000B : Power, safety, and convenience in one
If you are preparing for long trips, want to maximize the operating time of your headlamp or flashlight, or simply need a reliable USB power source, then the Fenix ARB‑L21‑6000B is the ideal choice for you. Order now at Swiss-Sale.ch – your reliable energy supplier for outdoor activities, fire departments, police, professionals, and anyone who wants to stay bright at all times.
