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Fenix ARB-L21-5000 5000mAh 21700 Battery - Used
Fenix 5000mAH 21700 Rechargeable Battery

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Used Price: $15.84

Quantity in Stock:7

Availability: Usually Ships in 24 Hours
Product Code: BAT-FX-21700-L21-5000-USED


Used batteries/batteries used for testing in lightly used condition without original packaging. Batteries are charged and tested in flashlights to ensure their functionality. Batteries are shipped in a plastic battery organizer for safety.

FENIX ARB-L21-5000 At-A-Glance

  • Fenix 21700 5000mAh high capacity battery
  • For high-intensity LED flashlights like the Fenix PD36R
  • Internal and external safety features
  • Built-in overcharge and over-discharge protection
  • Designed to last over 500 charge cycles
  • 12 month warranty period

Included in the Box

  • Used Fenix ARB-L21-5000 21700 Rechargeable Battery

Rechargeable Battery for Fenix PD36R

The Fenix ARB-L21-5000 is a high-performance battery designed to power 21700 high drain devices like your favorite flashlights, lanterns, and more. We love to pair it with Fenix PD36R flashlights!

Fenix 21700 5000mAh Battery

Simply charge the Fenix 21700 battery using the built-in charging feature of the Fenix PD36R or using another compatible battery charger. With built-in overcharging and over-discharge protection, the ARB-L21-5000 is designed to last over 500 charge cycles. A 12 month free warranty period means you will never have to worry about this battery leaving you in the dark.


Capacity 5000 mAh
Voltage 3.6 V
Charging Current (Recommended) 1 A
Charging Current (Maximum) 5 A
Dimensions L-2.99"xW-0.85"xH-0.85"
Weight 2.56oz

21700 Battery Compatibility

  • This is a button top battery designed for flashlights that accept standard 21700 batteries.
  • It does NOT work in any non-flashlight device.
  • It does NOT work in any flashlights that require a custom battery.
  • It does NOT work in any electronics that only accept flat top batteries.
  • It can be charged in a lithium-ion charger such as Fenix ARE-A2, Fenix ARE-A4.
Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 1 Write a review.

Fenix ARE-A4 4-Slot Li-ion Smart Battery Charger
Price: $39.95

Fenix ARE-A4 Four Channel Battery Smart Charger for 14500, 16340, 18650 Batteries and More

  0 of 0 people found the following review helpful:
5 of 5 Batteries March 2, 2023
Reviewer: Anonymous Person from Ventura, CA United States  
Great shape and work really well

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