Fenix ARB-L18-3400U rechargeable battery plugged in to charge
Fenix ARB-L18-3400U rechargeable battery with text showcasing its micro-usb charging interface
Fenix ARB-L18-3400U rechargeable battery with text details
Fenix ARB-L18-3400U rechargeable battery with text showing its runtime
Fenix ARB-L18-3400U rechargeable battery with text discussing its steel body
Fenix ARB-L18-3400U rechargeable battery protection features
Fenix ARB-L18-3400U rechargeable battery specifications chart
Fenix ARB-L18-3400U rechargeable battery standing up
Fenix ARB-L18-3400U rechargeable battery viewed from the side
Two Fenix ARB-L18-3400U rechargeable lithium-ion batteries with orange wrapping and black detailing, featuring the capacity rating of 3400mAh.
Fenix ARB-L18-3400U rechargeable battery plugged in to charge
Fenix ARB-L18-3400U rechargeable battery with text showcasing its micro-usb charging interface
Fenix ARB-L18-3400U rechargeable battery with text details
Fenix ARB-L18-3400U rechargeable battery with text showing its runtime
Fenix ARB-L18-3400U rechargeable battery with text discussing its steel body
Fenix ARB-L18-3400U rechargeable battery protection features
Fenix ARB-L18-3400U rechargeable battery specifications chart
Fenix ARB-L18-3400U rechargeable battery standing up
Fenix ARB-L18-3400U rechargeable battery viewed from the side
Two Fenix ARB-L18-3400U rechargeable lithium-ion batteries with orange wrapping and black detailing, featuring the capacity rating of 3400mAh.

Fenix ARB-L18-3400U Micro-USB Rechargeable 18650 Battery

$24.95 $20.95 Save 16%
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compatible accessories

The Fenix ARB-L18-3400U USB rechargeable lithium-ion battery features a built-in USB port to charge without the need for an external charger, though one can be used if desired. Its anode circuit is specially encased in a steel housing, reducing the risk of short-circuiting from impact or collision due to the fully wrapped steel construction.

Note: This item is packaged and priced as one unit - one battery. 

Shipping Note: Lithium ion batteries are considered "dangerous goods" per US transportation regulations and can often only be transported via ground shipment. Orders containing loose batteries will typically take much longer than predicted to be delivered. Delivery times of 14+ days are not uncommon.  

  • Fenix ARB-L18-3400U mAh USB Rechargeable 18650 Battery
  • Micro USB charging port lets you charge the battery directly
  • Button-Top Design Protection circuit built in the anode with a riveted steel hat.
  • Riveted steel shell eliminates the risk of short circuit caused by collision and impact.
  • Pressure Relief Vent: Expels waste gas generated by internal short circuit. Expelling waste gas prevents a cell from inflating or exploding.
  • Three Sets of Over-Heat Protection: Overcharge protection, Over-discharge protection, Short-circuit protection, and overheating protection
  • 500 Charge Cycles: A properly maintained ARBL18 battery is designed to retain up to 75% of its original capacity at 500 full charge and discharge cycles.
  • **USB Cable NOT Included**
  • Fenix ARB-L18-3400U Micro-USB Rechargeable 3400mAh 18650 Battery (Qty 1)
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Overall rating: 4.25 / 5 from 8 reviews.

AI Generated Review Summary

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Reviews

Batteries

"Work great"

— Lawrence G. (5/5)

Excellent battery life

"I purchased these batteries as spares for my Fenix LD30 flashlight and LED Lenser Flex 3 powerbank. Excellent battery life"

— Timothy R. (5/5)

Being generous

"Sorry, but shipping was slow. Battery came a week and half after original delivery date. And apparently my Fenix flashlight is the issue. For the money the flashlight cost, it should have lasted me longer than 2 years"

— Peter B. (3/5)

Great products and customer service!

"I purchased this battery for a headlamp that has lasted me over a decade. The customer service team was informative and responded quickly to confirm my products were compatible with the Fenix HL-55 lamp. Very satisfied!"

— Madison W. (5/5)

Battery ARB L18 3400U Review

"The construction of the product is great at first glance. I haven't had a chance to experience the battery strength over time to see how the battery will hold up, so that's why not giving five starts yet."

— Eric V. (3/5)

Fenix Rocks!

"There is no better product in the illumination market than Fenix!"

— Paul K. (5/5)

Not inpressed with the new model!

"I would love to put a better river , but the new light I bought just crapped out on me I’m going to send it back you need to build it like the first models🙏🏼"

— Adolfo j. (3/5)

"Easy to charge and last a long time! Great product!"

— Chris (5/5)

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