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18650 Fenix battery line up vertical
ARB-L18-3500 multiple protection
ARB-L18-3500 pressure relief
battery protection circuit
All Batteries have 500 charge cycles

Fenix 18650 Rechargeable Batteries

Rated 4.67 out of 5 based on 54 customer ratings
(54 customer reviews)

$9.95 – $22.95

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18560 rechargeable batteries are the highest volume standard battery used in lighting products. They are a great alternative for products that utilize 2xCR123A disposable batteries. Not only are you being environmentally friendly by eliminating disposable batteries, 18650 rechargeable battery provides different levels of capacity for your exact need. For example, you can get 30% more capacity out of a ARB-L18-3500 compared to a ARB-L18-2600.

In addition, Fenix batteries are built with safety in mind. There are built in features to prevent short circuits, design multiple layers of protection and the new button-top design. The high capacity 18650 Li-ion rechargeable batteries each provide protection circuits in the anode to help prevent short circuits, over charge/discharge and over heating. Each battery also includes pressure relief vents which expel waste gas in the rare case of an internal short circuit preventing an explosion.

The USB versions will work in all of the current models that utilize a li-ion 18650 battery—in older Fenix lights these may not work.

See our wide range of products that accommodate the 18650 batteries: 18650 Fenix Products 

 

For commercial orders and large purchases, contact us at (888) 775-9996 x6, or
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Description

ARB-L18-2600 Rechargeable Battery

  • 2600mAh high capacity
  • Protection circuitry to prevent short circuits
  • Pressure vents to prevent explosions
  • 500 charge cycles guaranteed before 75% decrease by memory effect
  • 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

ARB-L18-2600U

  • Micro-USB charging port
  • 2600mAh high capacity
  • Protection circuitry to prevent short circuits
  • Pressure vents to prevent explosions
  • 500 charge cycles guaranteed before 75% decrease by memory effect
  • Voltage: 3.6V
  • Charging Current: Recommended 1A, maximum 2A
  • Charging Current USB Port: 1A
  • Weight: 1.8 ounces (50g)
  • Size: Length: 2.8″ (70mm) Diameter: 0.7″ (18.6mm)
  • Warranty Period: 12 month from date of purchase

ARB-L18-2900 Rechargeable Battery

  • 2900mAh high capacity
  • Protection circuitry to prevent short circuits
  • Pressure vents to prevent explosions
  • 500 charge cycles guaranteed before 75% decrease by memory effect
  • 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

ARB-L18-3400 Rechargeable Battery

  • 3400mAh high capacity
  • Protection circuitry to prevent short circuits
  • Pressure vents to prevent explosions
  • 500 charge cycles guaranteed before 75% decrease by memory effect
  • 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 purchaseARB-L18-3500 Rechargeable Battery

ARB-L18-3500 Rechargeable Battery

  • 3500mAh high capacity
  • Protection circuitry to prevent short circuits
  • Pressure vents to prevent explosions
  • 500 charge cycles guaranteed before 75% decrease by memory effect
  • 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

ARB-L18-3500U Rechargeable Battery

  • Micro-USB charging port
  • 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
  • Charging Current USB Port: 0.8A
  • Weight: 1.8 ounces (50.2g)
  • Size: Length: 2.8″ (70mm) Diameter: 0.7″ (18.6mm)
  • Warranty Period: 12 month from date of purchase

54 reviews for Fenix 18650 Rechargeable Batteries

5 star
77%
4 star
16%
3 star
1%
2 star
1%
1 star
1%
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  1. Rated 5 out of 5

    Anonymous (verified owner) –

    Work great

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  2. Rated 5 out of 5

    Fernando H. (verified owner) –

    Works great

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  3. Rated 5 out of 5

    Lawrence Ritter (verified owner) –

    Excellent Quality – long lasting

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  4. Rated 4 out of 5

    Paul M. (verified owner) –

    Seem ok. Haven’t really put them to the test yet.

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  5. Rated 5 out of 5

    Joe (verified owner) –

    I have used Fenix flashlights & batteries for several years. All good products…recommended.

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  6. Rated 5 out of 5

    Richard O. (verified owner) –

    Lost a PD35 2014 Edition. Had too many flat top batteries to purchase PD35 V2. Lucky PD35 Tac uses flat top batteries. Bought 2 flashlights but needed to replace the battery that was in the lost flashlight. In that they don’t sell flat top batteries anymore, this battery performs just as good and will be usable in other flashlights not using flat tops should I need to buy another flashlight in the future.

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  7. Rated 5 out of 5

    Randy R. (verified owner) –

    Long life

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  8. Rated 5 out of 5

    Brian (verified owner) –

    The 3500mAh batteries are excellent. Plenty of long lasting power for my tactical flashlight. The plastic cases that are included is a nice bonus.

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  9. Rated 5 out of 5

    james cooper (verified owner) –

    Its everything it says it is. Its worth the price! Buy it!

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  10. Rated 5 out of 5

    Daniel D. (verified owner) –

    These batteries are expensive but worth spending the money.

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  11. Rated 1 out of 5

    Steve Ouellet3 (verified owner) –

    I bought a 2nd battery with the flashlight. the other day I dropped the flashlight from about 4 feet, I stopped working later realized that the light was fine but somehow its the battery thats broken. I tried charging it and nothing. when i put in the other battery it works fine,
    Plus the 2nd battery (the one that broke) didnt have a charging inlet like the original.

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    • Dianne –

      I will have someone from warranty contact you.

  12. Rated 5 out of 5

    George Kreke (verified owner) –

    Works greak.

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  13. Rated 4 out of 5

    Jay (verified owner) –

    Long lasting battery. But nothing special

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  14. Rated 2 out of 5

    Chad Oatley (verified owner) –

    If you drop the light, for some reason the battery quits working.

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    • Dianne –

      I will have someone from warranty contact you.

  15. Rated 5 out of 5

    Bruce (verified owner) –

    Easy to charge via charger or usb port on the battery.

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  16. Rated 5 out of 5

    Brian C. (verified owner) –

    No real charger required.

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  17. Rated 5 out of 5

    Wiiliam Mitchell (verified owner) –

    I like the batteries they hold a charge for a good long time and they charge fairly quickly so the batteries are very good.

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  18. Rated 5 out of 5

    Robert V. (verified owner) –

    So far as good.

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  19. Rated 5 out of 5

    Anonymous (verified owner) –

    Great quality. Haven’t had to use it a whole lot but so far works extremely well

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  20. Rated 5 out of 5

    Brett VanMeter (verified owner) –

    👍🏻

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  21. Rated 4 out of 5

    Tracy Glover (verified owner) –

    They work fine

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  22. Rated 5 out of 5

    david saxton (verified owner) –

    After owning other brands I found the Fenix to own and the 3500AH most desirable!

    1 out of 1 people found this helpful. Was this review helpful to you?
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  23. Rated 5 out of 5

    Bill S. (verified owner) –

    Worked great

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  24. Rated 5 out of 5

    Robert V. (verified owner) –

    Excellent so far.

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  25. Rated 4 out of 5

    Michael M. (verified owner) –

    Pricey but great product

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  26. Rated 3 out of 5

    Raul M Garcia (verified owner) –

    The battery was about 3/32 “ longer than other 18650s

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  27. Rated 5 out of 5

    Franklin R. (verified owner) –

    Great batteries. I chose to purchase one with the USB charger in the battery so I would not have to take a charger with me too.

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  28. Rated 5 out of 5

    Eddie (verified owner) –

    Haven’t had to use yet but it gives piece of mind to have extra charged batteries on the job. Definitely better the having to buy batteries all the time.

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  29. Rated 4 out of 5

    David (verified owner) –

    They work. Too soon to know how well.

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  30. Rated 5 out of 5

    Taylor Elkins (verified owner) –

    Great

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  31. Rated 4 out of 5

    Hyrum (verified owner) –

    Haven’t used 3500 yet. Bought for a spare.

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  32. Rated 5 out of 5

    Anonymous (verified owner) –

    Great batteries

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  33. Rated 5 out of 5

    David W. (verified owner) –

    long lasting

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  34. Rated 5 out of 5

    Anonymous (verified owner) –

    Great capacity, tested in a battery analyzer, hope they hold the capacity a long time

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  35. Rated 5 out of 5

    Paul D (verified owner) –

    Great to have some spares at the ready folks!

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  36. Rated 5 out of 5

    Adam (verified owner) –

    Great batteries long run times

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  37. Rated 5 out of 5

    Joel T. (verified owner) –

    These batteries appear to be of the highest in build qualities. They charged quite readily and on first blush will meet my needs

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  38. Rated 5 out of 5

    Daniel S. (verified owner) –

    Easy to charge and works well

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  39. Rated 5 out of 5

    Joel T. (verified owner) –

    Fenix produces high quality product for a reasonable price. What really impresses is their customer service. My hat is off for Blake in here in the US and Linda in China. I can’t say enough about how impressed I am with Fenix Lighting and Fenix Light. Thanks you guys 👏🏼👏🏼👏🏼

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  40. Rated 5 out of 5

    David Becker (verified owner) –

    This battery got me through two long nights at the Grindstone 100 mile trail race…on the same charge!!! If Fenix is looking for an ambassador, I’m your guy! These are bar none the best damn batteries and headlamps!!!

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  41. Rated 5 out of 5

    Russell Taylor (verified owner) –

    It recharges. There u go.

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  42. Rated 5 out of 5

    Anonymous (verified owner) –

    very good

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  43. Rated 5 out of 5

    James Norlien (verified owner) –

    They work to spec for the advertised lifespan

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  44. Rated 5 out of 5

    Kristipher (verified owner) –

    Great

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  45. Rated 5 out of 5

    Anonymous (verified owner) –

    The brightest mofo dooger I have ever used. Rill fine flashlight…Dont tell me how to spell! DB

    1 out of 1 people found this helpful. Was this review helpful to you?
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  46. Rated 4 out of 5

    Shaylon (verified owner) –

    I assume they are good because I have not depleted one yet.

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  47. Rated 5 out of 5

    Alan Y. (verified owner) –

    Like the micro usb charcing

    1 out of 1 people found this helpful. Was this review helpful to you?
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  48. Rated 5 out of 5

    Sean M. (verified owner) –

    Works great. Would purchase again.

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  49. Rated 5 out of 5

    GREGORY (verified owner) –

    The 3500mAh is very good. I would not go with anything else.

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  50. Rated 5 out of 5

    John Jensen (verified owner) –

    Don’t know yet depends how long they last

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  51. Rated 5 out of 5

    Damion (verified owner) –

    Used the UC35 V2.0 for fixing my car the other day and forgot about it. Came back next morning was on ha. Battery long lasting

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  52. Rated 5 out of 5

    michael powers (verified owner) –

    It came charged. Have been using it for 2 weeks with no problems

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  53. Rated 4 out of 5

    Vince (verified owner) –

    I like that you can charge the battery. Haven’t used it yet because it is a backup

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  54. Rated 4 out of 5

    sean p. (verified owner) –

    Consistent good quality batteries. No complaints.

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