Fenix ARB-L21-5000U 21700 Battery (5,000 mAh)

€ 2495

✔ For runners and hikers with a lamp that uses a 21700 battery
✔ Long night hikes, camping and as a spare battery
✔ 5000 mAh, USB-C in the battery and a charging light
✖ Less suitable for lamps with an 18650, this battery is larger
  • 365 days to exchange
  • Shipped daily
  • Customers rate us 4.9/5
  • Pick up in our Amsterdam store

Description

Plenty of capacity. The ARB-L21-5000U is a 21700 Li-ion battery with 5000 mAh (3.6 V). Your lamp burns for a long time, even during long nights outdoors.

Charging via USB-C. The battery has a USB-C port, so you don't need a separate charger. A light shows when the battery is full.

Safe and durable. A protection circuit guards against overcharging and overheating. The battery lasts up to 500 charge cycles and weighs 72 grams.

A strong spare battery for lamps that use a 21700. It doesn't fit lamps designed for an 18650.

Specifications
  • Why this one
    Rechargeable 21700 battery with 5000 mAh and built-in USB-C port
  • Battery
    5000 mAh (USB-C)
  • Colour
    Orange
  • Country of production
    China
  • Warranty
    2 Years
  • SKU
    FEARB-L21-5000U*
  • EAN
    6942870369358

Why Fenix?

It's half past five, still dark, and the first kilometres follow a narrow forest trail. That's not the moment to think about your lamp: it has to be bright enough and last the whole run. That's exactly why we carry Fenix at Trail.NL.

Fenix makes rugged headlamps with plenty of light and modes that are easy to operate, even with cold hands. Many models have a swappable battery, so with a spare in your vest you get through the night of an ultra. The range goes from a light lamp for evening runs to a powerful lamp for technical mountain trails.

For us, Fenix is above all a reliable choice: plenty of light, long burn time and built tough for rain, cold and a drop on the rocks.

Frequently asked questions

Which lamps does this battery fit?

Lamps that use a 21700 battery. Not sure? Just ask us.

How do I charge the battery?

Via the USB-C port in the battery, with an adapter, laptop or power bank.

What's the difference from an 18650?

A 21700 is thicker and longer and has more capacity. They are not interchangeable.

Can I take the battery on a plane?

Yes, loose Li-ion batteries up to 100 Wh are allowed in your hand luggage. This battery is well below that. Protect the terminals, for example with a battery case.

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