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Fenix 18650 3.6 V Rechargeable Battery

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The Fenix ARB-L18-3500 is a high capacity 18650 Li-ion rechargeable 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.


  • 3500 mAh capacity
  • Protection circuitry to prevent shorts
  • Pressure vents to prevent explosions
  • Retains 75% charge capacity even after 500 charge cycles
  • Voltage: 3.6 V
  • Charging Current: Recommended 1 A, maximum 2 A
  • Weight: 1.8 oz (50 g)
  • Size: Length: 2.7 in. (69 mm); Diameter: 0.7 in. (18.6 mm)