Free shipping on orders over $35!

Be Prepared for the Unexpected | 20% off select lights and gear

Code: PREP26
1 6
Fenix  |  SKU: BAT-FX-21700-ARB-L21-5000U

Fenix ARB-L21-5000U 5000mAh USB C Rechargeable 21700 Battery

$26.95
Shipping calculated at checkout.
  • Fenix 21700 5000mAh high capacity battery with outstanding performance
  • Suitable for high-intensity LED flashlights like the Fenix PD36R
  • Multiple protections with internal and external safety features
  • Built-in overcharge and over-discharge protection to increase battery lifespan
  • View more details
Ground shipping only within the lower 48 U.S. states.

Description

Fenix 21700 5000mAh Battery

The Fenix ARB-L21-5000U is a high-performance, li-ion battery designed to power high drain devices that support 21700-size batteries like your favorite flashlights, lanterns, and more. We love to pair it with Fenix PD36R, TK22 V2.0, or TK22UE.

Direct USB-C Rechargeable Battery

Simply charge the Fenix 21700 battery using the built-in USB-C charging port or using another compatible battery charger. With built-in overcharging and over-discharge protection, the ARB-L21-5000U is designed to last over 500 charge cycles. The cathode, (positive button top) features a battery charging indicator: red for charging, green for fully charged. A 12 month free warranty period means you will never have to worry about this battery leaving you in the dark.

Specifications

Specifications

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

Included in the Box
  • Fenix ARB-L21-5000U 21700 Rechargeable Battery
  • *USB-C Cable Not Included

Select a Video:

This 5000mAh USB C rechargeable 21700 battery receives universal praise. Customers said it offers "long life and easy charging" with reliable quality. Shoppers appreciated the hard-to-find item's availability, with "great battery" performance. All reviews are 5-star ratings highlighting excellent service and quick delivery.

  • 5 stars: 7 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
S
Stephan Werth
Fenix 5000mAh USB C Rechargeable 21700 Battery

I tried to buy this battery directly from Fenix and it wasn't even listed on their website. I surprisingly found it from Longhorn Tactical, order two, and received them exactly when they said I would. I was extremely pleased.

P
Paul Angrisano
Easy transaction

As ordered

D
Douglas Grant
Battery order

Good service, received new battery for my Fenix light in just a few days.

R
Robert Wakefield
Quality

I always choose Fenix brand for quality. This model doesn’t disappoint.

G
Glenn Gibbons
Thank you.

Got me a very hard to find item that no one else had in just a couple of days. Will be ordering more.

T
Tom
Fenix ARB-L21-5000U

Great battery, long life and easy charging.

K
Keith Newell
The real DEAL.

Can't expect any better than Longhorn's business practice of up front great customer service: as described, right price, well packaged, and quick shipping. Nope, ya' just can't do better than that.
Back to top