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Fenix ARB-L18-3500 18650 3500mAh 3.6V Protected Lithium Ion Button Top Battery

23 reviews
Save $2.99
Original price $39.07
Current price $36.08


The next generation of 18650 batteries are here.  Introducing the top-of-the-line Fenix 18650 battery--an amazing 3500mAh rating. Fenix always continues to increase their focus and desire to keep safety as the highest priority and with this new ARB-L18-3500mAh 18650 battery, Fenix has built in features to prevent short circuits and designed multiple layers of protection within it. With the new button-top design, the new 18650 series better accommodates a variety of flashlight brands.

18650 batteries are perfect for powerful Fenix LED flashlights since they are rechargeable, have a long battery life, and can handle the power requirements of advanced LED flashlights.



  • 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.

    Fenix ARB-L18-3500 Battery
Customer Reviews
5.0 Based on 23 Reviews
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Excellent service client

Bonjour. Je viens d'avoir la batterie. Donc je ne peut pas commenter sa longévité. Cependant les produits Fenix commandés fonctionnent à merveille. Une note spéciale à la personne qui a répondue à toute mes questions et qui m'a permis d'avoir tout les produits au bon moment. Son excellent sens de la clientèle me fait recommander la Flashlightworld à mon entourage. Merci encore. Bonne journée.

David L.
Canada Canada


Hi, they are long lasting, perfect for my headlamp, I highly recommend it.

Clement D.
Canada Canada


The batteries are fantastic , charge fast and work even better.

Kevin H.
Canada Canada

Product is a part of a Christmas present..will know after Christmas

Wendy N.