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Fenix 21700 5000mAh 3.6V Protected Lithium Ion (Li-ion) Button Top Battery with Built-In USB-C Charging Port (ARB-L21-5000U)

Fenix 21700 battery upright
Fenix 21700 battery left side angle and upright views
Fenix 21700 battery upright
Fenix 21700 battery left side angle and upright views
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$24.95
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Description

Fenix 21700 Battery with USB-C Port

3.6V | 5000mAh Capacity | USB-C Charging Port

This Fenix 21700 battery stands out from other 21700 batteries with its built-in USB-C charging port. This charging port allows for incredibly fast charging so you can power-up high drain flashlights in under 4 hours. Plus, with an internal charging port, there is no need to purchase a separate charger! With 3.6 volts of power and a 5000mAh capacity, this 21700 is outfitted with PTC and PCB protections ensuring extended runtimes and use. The 3 sets of overheat protection make sure the battery retains a stable temperature while powering your preferred flashlights. With these protection systems in place combined with the USB-C charging port, this 21700 battery is the ideal companion for any 21700-compatible flashlight.

Features & Specifications:

  • Capacity: 5000mAh
  • Voltage: 3.6V
  • Charging Cycles: 500 cycles
  • Charging Current with Charger: 1A recommended, 5A maximum
  • Charging Current via USB-C Port: 2A
  • Maximum Output Current: 8A
  • Dimensions:
    • Height: 2.99"
    • Diameter: 0.85"
  • Weight: 2.56oz (72.5g)
Specifications
Battery Size:21700
Battery Capacity (mAh):5000
Battery Chemistry:Li-Ion
Battery Voltage:3.6
Battery Terminal Type:Button Top
Packaging:Retail Packaging
Brand:Fenix
Warranty:Battery Junction 30-Day Warranty, Fenix 1 Year Warranty
Return Policy:Battery Junction Return Policy
Product Weight:2.56oz
UPC:736952853394
MPN:ARB-L21-5000U
Country of Origin:China
Reviews
By Eric
California
Backup for USB-C 21700
March 16, 2021
As 21700 emerge as the new go to over 18650, the manufacturers are leaning towards proprietary batteries in chemistry and size. No exception here. Like the Olight 21700, the Fenix 21700 is longer due to the USB-C. Thus you cannot swap 21700s between most lights. I have this Fenix dedicated as backup for my WellTool W4 which uses same USB-C 21700 longer battery.
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Fenix 21700 5000mAh 3.6V Protected Lithium Ion (Li-ion) Button Top Battery with Built-In USB-C Charging Port (ARB-L21-5000U)

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