Fenix ARB-L21-5000 Li-ion Rechargeable 21700 Battery


The Fenix ARB-L21-5000 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.


  • 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