Fenix ARB-L18-3500 Rechargeable 18650 Battery

Rated 4.89 out of 5 based on 9 customer ratings
(9 customer reviews)

The Fenix ARB-L18-3500 is a high capacity 18650 Li-ion rechargeable with a protection circuit in the anode to help prevent short circuits, over charge/discharge and over heating. The battery also includes pressure relief vents which expel waste gas in the rare case of an internal short circuit preventing an explosion.

$32.00 $21.95

4.89 out of 5

Out of stock

SKU: ARB-L18-3500. Categories: , , .
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  • ARB-L18-3500 Rechargeable Battery
  • 3500mAh high capacity
  • Protection circuitry to prevent short circuits
  • Pressure vents to prevent explosions
  • 500 charge cycles
  • Voltage: 3.6V
  • Charging Current: Recommended 1A, maximum 2A
  • Weight: 1.8 ounces (50g)
  • Size: Length: 2.7″ (69mm) Diameter: 0.7″ (18.6mm)
  • Warranty Period: 12 month from date of purchase
Reviews (9)

9 reviews for Fenix ARB-L18-3500 Rechargeable 18650 Battery

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  1. Rated 5 out of 5

    John J. (verified owner)

    Works as advertised. It is a bit pricy compared to other 18650’s on the market. But at least with Fenix, I know that I’m getting a good product

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  2. Rated 5 out of 5

    Timothy M. (verified owner)

    I wasnt sure that this w/b an improvement over the 2600mAh, but it is! Worth it

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  3. Rated 5 out of 5

    Eric M. (verified owner)

    I own a termite inspection company and so I have many Fenix flashlights and accessories. These are the best and brightest flashlights we have ever used and very durable. The batteries last a very long time as we use professionally 5 days a week. When we do need service they stand behind the product. I could not more highly recommend this product.

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  4. Rated 4 out of 5

    Anonymous (verified owner)

    They seem to hold up pretty well. I haven’t really had time to put these batteries through the wringer yet…

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  5. Rated 5 out of 5

    Sergeant Frank C. (verified owner)

    Solid purchase.

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  6. Rated 5 out of 5

    Paul Carroll (verified owner)

    Outstanding battery. I’m buying some for my coworkers

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  7. Rated 5 out of 5


    I can’t say enough about the charger. I expected a plastic step-on-me-once-and-I’m -dead charger. This thing is tough! I don’t know what it is made out of but I am so impressed I’m getting one for my step-son.
    I use mine (HL60R) professionally (daily) and made the mistake of taking it goose hunting once and my step-son really loved it. He got one for Christmas and now getting a charger. Inexpensive and sturdier than any charger I have ever purchased at any price.

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  8. Rated 5 out of 5

    Tommy B in Dallas

    Friends gave me a Fenix UC40UE tactical light for my birthday, and I am hooked on Fenix Quality. Just returned from a 12 day elk in the Wyoming back country and this light was outstanding, while using the FENIX 3500 amh rechargeable batteries. 900 Lumens from this small compact light it awesome!! Outstanding quality!! I just ordered the new version of the TK75 and cannot wait to get my hands on this one. Fenix service is also outstanding and they are always helpful when I call…. helpful and full of the correct information! Keep up the good work! Fenix quality is second to none!!!!

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  9. Rated 5 out of 5

    Kevin (verified owner)

    Just got the batteries, they look good and are charging now. This review is primarily for the Fenix brand and level of service. I ordered two of these batteries and a two Bay charger. When I received the order there was a 4 Bay digital charger and a note stating that they were out of stock on the two Bay and to please accept the free upgrade. I am highly impressed, Fenix didn’t have to do that but rather than make an ordeal out of it they not only got me what I needed but gave me more than I had asked for. I appreciate this greatly as I am going camping in a few days and don’t have time to order another from somewhere else without having to pay overnight shipping. Fenix quality is outstanding and they’re service to customers matches it. Im now a customer for life

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Add An Accessory

  • 4-Bay Digital Charger (ARE-C2) is an advanced multi-charger compatible with broad spectrum of Li-ion and Ni-MH rechargeable cell sizes and capable of charging four different rechargeable batteries simultaneously while the LCD display keeps you informed with readouts of voltage and charging status.
    This product has been discontinued, please see our new ARE-C2+ charger.
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