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

21 reviews
Save $7.49
Original price $40.28
Current price $32.79


This little guy can kick a certain bunny batteries butt.  The Fenix ARB-L18-3500U USB rechargeable Li-ion battery can be charged by its USB port and by the charger as well. A protective circuit is built into the anode and covered with a riveted steel hat, riveted steel hats are cool, even if you wouldn’t want to wear one in the rain. The battery is fully covered with the steel shell; thus, the potential risk of short-circuiting is low.


  • Fenix ARB-L18-3500mAh Rechargeable 18650 Battery
  • Button Top Design
  • Protection circuit built in the anode with a steel hat by riveting process
  • 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:  
    • Over charge protection and over discharge protection
    • Short circuit protection
    • 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.


Customer Reviews
4.9 Based on 21 Reviews
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Filter Reviews:
Ray W.

bought it just to see it would give my vape more run time but this sucker is 3mm longer than a normal battery so i guess i'll just save it for when i buy a flashlight


I am happy with my purchase. Great product.

Glenn G.

Holds a good charge. Too bad the shipping cost was almost as much as the battery.

Mark A.
Mark F.