Skip to content
  • 🛍️ Shop smart, save big, with free shipping 🛍️
  • 🛍️ Shop smart, save big, with free shipping 🛍️
NitecoreNitecore
  • Menu
  • Flashlights
    • Nitecore
    • Fenix
    • Armytek
    • EagleTac
    • Acebeam
    • Handheld Torches
    • Zebralight
    • Niwalker
    • Flashlight Accessories
  • Outdoor
    • Carry
    • Firelighters
    • Pens
    • Mosquito Repellent
    • Hydration
    • Water Purification
    • Compasses
    • Binoculars & Monoculars
    • Survival Kits
  • Knives
    • Spyderco
    • Sharpeners
    • Kershaw
    • Byrd
    • CRKT
    • Old Timer
    • Nitecore
    • Boker
  • Quick Search
    • Head Torches
    • Keyring Torches
    • Rechargeable
    • Bike Lights
    • Lanterns
  • Batteries
    • Li-ion
    • Power Bank
    • NiMH
    • IMR
  • Chargers
    • Camera Battery Chargers
    • USB Chargers & Cables
    • Mains Chargers
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

Home / Batteries / Li-ion
  • Eneloop Pro AAA Ni-MH Rechargeable Batteries -Nitecore pro aaa
  • Nitecore 21700 NL2160HP Li-ion High Performance (6000mAh) Battery -Nitecore nitecore nl2160hp 0
Sale!
Fenix ARB-L21-5000U 21700 Battery
Fenix ARB-L21-5000U 21700 Battery - Image 2
Fenix ARB-L21-5000U 21700 Battery - Image 3
Fenix ARB-L21-5000U 21700 Battery - Image 4
Fenix ARB-L21-5000U 21700 Battery - Image 5
Fenix ARB-L21-5000U 21700 Battery - Image 6
Fenix ARB-L21-5000U 21700 Battery - Image 7
Fenix ARB-L21-5000U 21700 Battery - Image 8
Fenix ARB-L21-5000U 21700 Battery -Nitecore Fenix ARB L21 5000UU 21700 1
Fenix ARB-L21-5000U 21700 Battery -Nitecore Fenix ARB L21 5000UU 21700 2
Fenix ARB-L21-5000U 21700 Battery -Nitecore Fenix ARB L21 5000UU 21700 3
Fenix ARB-L21-5000U 21700 Battery -Nitecore Fenix ARB L21 5000UU 21700 4
Fenix ARB-L21-5000U 21700 Battery -Nitecore Fenix ARB L21 5000UU 21700 5
Fenix ARB-L21-5000U 21700 Battery -Nitecore Fenix ARB L21 5000UU 21700 6
Fenix ARB-L21-5000U 21700 Battery -Nitecore Fenix ARB L21 5000UU 21700 7

Fenix ARB-L21-5000U 21700 Battery

$29.95 Original price was: $29.95.$20.97Current price is: $20.97.

Buy Now
SKU: ARB-L21-5000U Categories: Batteries, Li-ion
  • fast shipping
  • Effortless Shopping, Quality Products
  • Shop with Peace of Mind
  • Enjoy top quality items for less
Browse
  • Batteries
    • IMR
    • Li-ion
    • NiMH
    • Power Bank
  • Chargers
    • Camera Battery Chargers
    • Mains Chargers
    • USB Chargers & Cables
  • Flashlights
    • Acebeam
    • Armytek
      • Hand Held
      • Head Lamps
    • EagleTac
      • D Series
      • P Series
      • S Series
      • T Series
    • Fenix
      • Accessories
      • E Series
      • HT Series
      • LD Series
      • LR Series
      • PD Series
      • TK Series
    • Flashlight Accessories
    • Handheld Torches
    • Nitecore
      • Accessories
      • Chameleon Series
      • Explorer Series
      • Head Torches
      • L Series
      • MH Series
      • MT Series
      • Precise Series
    • Niwalker
    • Zebralight
      • Hand Held Torches
      • Head Torches
  • Knives
    • Boker
    • Byrd
    • CRKT
    • Kershaw
    • Nitecore
    • Old Timer
    • Sharpeners
    • Spyderco
  • Outdoor
    • Binoculars & Monoculars
    • Carry
    • Compasses
    • Firelighters
    • Hydration
    • Mosquito Repellent
    • Pens
    • Survival Kits
    • Water Purification
  • Quick Search
    • Bike Lights
    • Head Torches
    • Keyring Torches
    • Lanterns
    • Rechargeable
  • Uncategorized
  • Description
  • Reviews (0)

Description

The Fenix ARB-L21-5000U battery is a high quality, li-ion, 21700 with a capacity of 5000mAh. The battery has a built-in USB-C port which removes the requirement for a separate external charger. 

The battery is compatible with Fenix 21700 powered torches.

To recharge simply plug a USB-C cable (not included) into the battery. The indicator will change from red to blue when fully charged, which takes approximately 4 hours.

Due to shipping restrictions we are unable to send orders containing only batteries without a device to Northern Ireland and the Channel Islands. Orders that include a device such as a torch and/or charger are unaffected.

Reviews

There are no reviews yet.

Be the first to review “Fenix ARB-L21-5000U 21700 Battery” Cancel reply

Related products

Sale!
Nitecore NC10000 Light & Power Bank
Quick View

Batteries

Nitecore NC10000 Light & Power Bank

$59.95 Original price was: $59.95.$41.97Current price is: $41.97.
Sale!
Nitecore 21700 NL2160 Li-ion Battery (6000mAh)
Quick View

Batteries

Nitecore 21700 NL2160 Li-ion Battery (6000mAh)

$30.95 Original price was: $30.95.$21.67Current price is: $21.67.
Sale!
Nitecore NPB1 Power Bank
Quick View

Batteries

Nitecore NPB1 Power Bank

$39.95 Original price was: $39.95.$27.97Current price is: $27.97.
Sale!
Nitecore NL1835R Micro-USB 18650 3500mAh Li-ion Battery
Quick View

Batteries

Nitecore NL1835R Micro-USB 18650 3500mAh Li-ion Battery

$24.95 Original price was: $24.95.$17.47Current price is: $17.47.
Sale!
Nitecore NL1835LTHP Low Temperature 18650 3500mAh Li-ion Battery
Quick View

Batteries

Nitecore NL1835LTHP Low Temperature 18650 3500mAh Li-ion Battery

$34.95 Original price was: $34.95.$24.47Current price is: $24.47.
Sale!
Fenix ARB-L18 18650 3500mAh Battery
Quick View

Batteries

Fenix ARB-L18 18650 3500mAh Battery

$25.95 Original price was: $25.95.$18.17Current price is: $18.17.
Sale!
Nitecore NW5000 Wireless Power Bank
Quick View

Batteries

Nitecore NW5000 Wireless Power Bank

$77.95 Original price was: $77.95.$54.57Current price is: $54.57.
Sale!
Nitecore 21700 NL2150i Li-ion Battery (5000mAh)
Quick View

Batteries

Nitecore 21700 NL2150i Li-ion Battery (5000mAh)

$32.95 Original price was: $32.95.$23.07Current price is: $23.07.
OUR SHOP
  • My account
  • Checkout
  • Cart
  • Payment Method
CONTACT
  • About Us
  • Contact Us
  • FAQ
  • Returns & Exchanges
CUSTOMER SERVICES
  • Privacy Policy
  • Shipping Policy
  • Term and Conditions
  • Delivery
STAY IN TOUCH

Sign up for exclusive offers, original stories, events and more.

    Copyright 2025 © www.outdoorlampstore.com
    • Flashlights
      • Nitecore
      • Fenix
      • Armytek
      • EagleTac
      • Acebeam
      • Handheld Torches
      • Zebralight
      • Niwalker
      • Flashlight Accessories
    • Outdoor
      • Carry
      • Firelighters
      • Pens
      • Mosquito Repellent
      • Hydration
      • Water Purification
      • Compasses
      • Binoculars & Monoculars
      • Survival Kits
    • Knives
      • Spyderco
      • Sharpeners
      • Kershaw
      • Byrd
      • CRKT
      • Old Timer
      • Nitecore
      • Boker
    • Quick Search
      • Head Torches
      • Keyring Torches
      • Rechargeable
      • Bike Lights
      • Lanterns
    • Batteries
      • Li-ion
      • Power Bank
      • NiMH
      • IMR
    • Chargers
      • Camera Battery Chargers
      • USB Chargers & Cables
      • Mains Chargers
    • Login

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.