Fenix ARB-L21 5000U 21700 Rechargeable Battery

Availability: In stock
Delivery time: 3 - 6 days


The Fenix ARB-L21-5000U is a high capacity 21700 Li-ion rechargeable battery with a protection circuit in the anode to help prevent short circuits, over charge/discharge and over heating. The battery also includes pressure relief vents which expel waste gas in the rare case of an internal short circuit preventing an explosion.


  • USB Type-C charging interface
  • Button-Top Design
  • Protective circuit inside the anode
  • Multiple protection
    • Over-charge protection
    • Over-discharge protection
    • Overheating protection
  • Short-circuit protection
  • 500 charging circles

Please Note: This battery is Not an 18650 battery and it is not compatible with 18650 battery powered lights

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