Fenix 21700 Li-ion USB-C Rechargeable Battery ARB-L21-5000U

LED Torch Shop are an authorised dealer of all Fenix products within Australia.
All products sold through LED Torch Shop are covered by Fenix's manufacturer warranty.

(3 customer reviews)

Original price was: $44.95.Current price is: $42.95.

Directly charge the Fenix 21700 Li-ion battery, ARB-L21-5000U, through the integrated USB-C charging port on the end of the battery.

Fenix ARB-L21-500U provides sufficient power, and steady performance, and the capacity of the 21700 battery is twice as powerful as the common 18650/2300mAh battery. It provides compatible lighting tools with sufficient power and longer duration. Multiple protection, ensures safety and good performance of the battery; Steel shell riveting technology, fully protects the battery against damage; Pressure relief vents, rapidly expel internal gas.

USB-C Charging cable is not included.

Available on back-order

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Same day dispatch
2yr warranty
30 day returns
Free gift when cart over $75
Free gift when cart over $200
Free gift when cart over $350
Aus Post Delivery Estimates
State Express Standard
VIC 1 business day 2 business days
ACT, NSW & SA 2 business days 3 business days
QLD & TAS 2 business days 4 business days
NT 4 business days 6 business days
WA 3 business days 5 business days
SKU: ARB-L21-5000U Categories: ,


  • TypeButton Top
  • Capacity5000mAh
  • Charging Current: 1A Recommended, 5A Maximum
  • Charging Cycles : 500
  • Wh Rating18Wh
  • Nominal Voltage3.6V
  • Dimensions: (L) 76mm x (W) 21.5 mm
  • Weight: 72.5 g

Additional information

Weight 0.073 kg

3 reviews for Fenix 21700 Li-ion USB-C Rechargeable Battery ARB-L21-5000U

  1. Sean (verified owner)

    An amazing battery makes my torch last even longer, even better that you can charge the battery itself.

  2. Kevin Wilson (verified owner)

    Great battery, life is good and simple to charge. Excellent service and support from the LED Torch Shop.

  3. David (verified owner)

    Easy to use and lasts a lot longer than the normal battery it replaces with adapter
    Doesn’t like to charge from a laptop hub but just used a power point instead

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