Fenix ARB-L18-3400 Rechargeable 18650 Lithium-Ion Battery
Product #45952 | SKU ARB-L18-3400 | Fenix
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In stock online Ships tomorrow


  • Built-In Protection Circuit
  • Three Layers of Overheating Protection


Power various electronics, including flashlights, headlamps, bike lights, camping lanterns, and more, with this Fenix ARB-L18-3400 Rechargeable 18650 Lithium-Ion Battery . The cell features 3.6V of output power, a 3400mAh capacity, and a 12.24Wh rating. It also has a built-in protection circuit that safeguards against short-circuiting, overheating, and excessive charge/discharge current.

The overheating protection is achieved by way of a three-layer design consisting of a pressure relief valve, a microporous membrane separator, and a PTC cathode block. Vents built into the battery expel gas generated by internal short circuits, in order to prevent the cell from inflating and exploding. As an added safety measure, the 18650 is covered by a steel shell for protection against impact.

Additionally, the durable battery is designed to last for up to 500 charge/discharge cycles, and its low self-discharge rate allows it to maintain up to 75% of its capacity after the final cycle. Since it is free of memory effect, the 18650 li-ion cell will not lose usable capacity if it is repeatedly charged after being only partially discharged. It is compatible with the Fenix ARE-C1, ARE-C2, and ARE-X1 chargers.


Type 18650
Chemistry Lithium-ion
Capacity 3400 mAh
Output Voltage 3.6 V
Watt-Hours 12.24 Wh
Charging Current 1.0-2.0 A
Packaging Info
Package Weight 0.2 lb
Box Dimensions (LxWxH) 5.9 x 3.2 x 1.2"

Australian Shipping Via DHL
DHL offers a great express shipping service to Australia from New Zealand. We are proud to be able to offer express shipping to main cities on the east coast of Australia, within the same timeframe ( If not quicker ) than local Australian courier companies. Prior to the Covid-19 outbreak, service standards for these main centers was overnight. However these services have been impacted greatly, and as such the overnight service has been suspended. Overnight shipping will likely resume once things have returned to normal.

Qualifying main centers include:

  • Brisbane
  • Sydney
  • Adelaide

Whilst this service is extremely efficient and will likely be delivered within 1-2 days 99.9% of the time, it cannot be guaranteed. In the case where something were to go wrong with your delivery and it doesn’t arrive within the specified time frame, in most cases it will be delivered by the next day.

While not all major cities are eligible for overnight delivery, they still benefit from this great service. Other centers throughout Australia will have a typical delivery ETA of 2-4 days. (Excluding rural delivery address where this ETA can be extended to an additional three or more days).

If you require urgent shipping and you don’t reside in one of the cities stated above, please contact us and we can find a solution that works best for you.

Please Note: Shipping via DHL is not available to PO boxes and/ or parcel boxes etc.

In The Box

  • Fenix ARB-L18-3400 Rechargeable 18650 Lithium-Ion Battery


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  • Product: Fenix ARB-L18-3400 Rechargeable 18650 Lithium-Ion Battery
  • Manufacturer: Fenix
  • Model: ARB-L18-3400
  • SKU: ARB-L18-3400
  • RM Product #: 45952
  • Battery: Lithium-Ion

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