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Fenix ARB-L18 3400mAh 18650 Button Top Li-on Battery

$27.27 $34.33 (You save $7.06)
Fenix ARB-L18
In Stock: Usually ships next business day.

Product Description

This is the new Fenix design 18650 button-top battery. This new 18650 battery is specifically designed for high-drain devices.

The Fenix ARB-L18-3400 is the latest addition to Fenix's collection of rechargeable lithium-ion batteries. This 18650 cell offers an impressive capacity of 3400mAh, which is ideally meant for use in high-drain devices, such as flashlights. The Fenix ARB-L18-3400 was designed with safety in mind. The powerful battery is equipped with a protection circuit that is built into the anode. The protection circuit is fitted with a steel hat so that the entire cell may be covered with a steel shell, thus eliminating any risk of short circuiting caused by impact or collision. The PCB circuit also prevents a user from overcharging or over-discharging the battery. In addition to the PCB circuit, the 18650 lithium-ion battery includes pressure relief vents, just in case a short circuit does occur. While rare, these vents provide a safe way to expel waste gas from inside, which will prevent the cell from inflating and from ultimately exploding.


  • A single Fenix ARB-L18 3400mAh 18650 Button Top Li-on Battery (1 battery per order)
  • 3400 mAh 3.6V high-capacity battery with outstanding performance
  • Button-top design
  • Protective Circuit inside the anode
  • Three sets of over-heat protection
  • Three levels of built-in over charge and over discharge protection circuit ensure the max performance of the battery
  • 500 Charge Cycles (A properly maintained ARB-L2S battery is designed to retain up to 70% of its original capacity at 500 full charge and discharge cycles)
  • Compact design, suitable for various high-intensity flashlights
  • No battery memory effect, negligible self-discharge 

Technical Parameters:

  • Model ARB-L2S
  • Capacity:  3400 mAh
  • Voltage: 3.6V
  • Charging Current: Recommended 1A, maximum 2A
  • Weight: 49g
  • Size:  Diameter 18.6mm (0.7"), Height 69mm (2.7")
  • Warranty Period:  12-month free warranty period from purchase date 

Battery Handling:

  • Do not expose the battery to heat or throw it into water
  • Observe the plus (+) and minus (-) marks on the battery and ensure correct use
  • After extended periods of storage, it may be necessary to charge the battery to obtain maximum performance every three months
  • Keep the battery out of the reach of children.  Seek medical advice immediately if the battery has been swallowed




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