Fenix 18650 Rechargeable Batteries

(166 customer reviews)

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18560 rechargeable batteries are the highest volume standard battery used in lighting products. The 18650 battery is a great alternative for products that utilize 2xCR123A disposable batteries. Not only are you being environmentally friendly by eliminating disposable batteries, but the 18650 rechargeable battery also provides different levels of capacity for your exact need and is rechargeable. 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 18650 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.  A micro-USB charging cord is NOT included with the USB versions. See our wide range of products that accommodate the 18650 batteries: 18650 Fenix Products 

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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
  • Indicator light on battery is red while charging, blue when charged

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 purchase

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
  • Indicator light on battery is red while charging, blue when charged

166 reviews for Fenix 18650 Rechargeable Batteries

  1. Anonymous (verified owner)

    Great product. Easy to recharge

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  2. Robert Y. (verified owner)

    Works as expected.

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  3. Anonymous (verified owner)

    Good batteries and flashlight.

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  4. Edward S. (verified owner)

    The best 18650’s hands down! Used for emergency management and absolutely the most reliable long lasting of many other brands previously used. They are the only option in Fenix lights if you want the best light for long run utilization!

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  5. James M. (verified owner)

    I got the 2600 mah for my bike light since I will know I will be charging these a lot and rotating batteries. Just me, but I use the 3500 mah batteries in regular flashlights that I don’t charge as much, due to price

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  6. Keith Comeau (verified owner)

    The laser light is bright and strong, most EXCELLENT !

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  7. Reza (verified owner)

    Amazing product, great engineering, I haven’t had to recharge it yet, even after a week of heavy continuous use the battery indicator still reads green

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  8. Matthew S. (verified owner)

    Just love how these batteries hold up and last great product

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  9. Daryl T. (verified owner)

    simple charging.

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  10. Hunter W. (verified owner)

    They’re batteries. A little expensive but otherwise they work like batteries

    0 out of 1 people found this helpful. Was this review helpful to you?
  11. Douglas D. (verified owner)

    I order the wrong battery and have been calling the company for days ask how do I return this battery for the right one???

    1 out of 1 people found this helpful. Was this review helpful to you?
    • Dianne (store manager)

      I will have someone from warranty reach out to you.

  12. LAWRNCE MONTUORI (verified owner)

    Awesome

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  13. Jonathan A. (verified owner)

    Awesome batteries with extended runtime!!!

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  14. Anonymous (verified owner)

    easy recharge

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  15. Anonymous (verified owner)

    Works great for my flashlight.

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  16. Joseph A. (verified owner)

    Just received batteries. Seem to hold charge for a long while. Very satisfied with this purchase.

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  17. Anonymous (verified owner)

    So nice to have this technology – no more charging blocks!

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  18. Connor Fiatal (verified owner)

    Excellent

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  19. Don (verified owner)

    I’ve had for about 2 weeks. Previous light was 250 lumens. This one is 900 when used for a spot light. Simply amazing! Lights up everything for a long way. Used when I’m out walking my dog.

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  20. Bob S. (verified owner)

    great product

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  21. Matthew Osgood (verified owner)

    Great battery

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  22. Christine Torres (verified owner)

    The battery lasts a long time

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  23. Bruce Moore (verified owner)

    Excellent service and very happy with these batteries

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  24. Mark S. (verified owner)

    Very strong battery!

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  25. James M. (verified owner)

    Have always had great service and long run times with these batteries!

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  26. Eduardo S. (verified owner)

    Batteries are great quality very happy with my purchase.

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  27. Anonymous (verified owner)

    These are the same batteries that came with my flashlight and they work as intended. Fenix products are made with high standards and these batteries are held in the same regard. 5 stars.

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  28. John Waugh (verified owner)

    Good value

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  29. Asana (verified owner)

    Bought for a little travel fan from S. Korea and this thing has some power! Haven’t had to recharge it yet (fan has a USB connector) but it seems like a great battery.

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  30. Gregory P. (verified owner)

    Excellent

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  31. Andrew C. (verified owner)

    Very pleased

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  32. Kevin (verified owner)

    Work great and last longer than the stock batteries. Good people to deal with. Recommend.

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  33. Mark M. (verified owner)

    Long lasting battery, reasonable charge time, no issues here

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  34. Jason C. (verified owner)

    Best lights and accessories

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  35. Jim

    The TK 20R is eveything you would expect in a quality piece of gear. Excellent Light and excellent service from Fenix.

    0 out of 1 people found this helpful. Was this review helpful to you?
  36. Paul (verified owner)

    Good battery

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  37. Andre D. (verified owner)

    Charges well and a great idea to use with their lights, gives a person that extra light time when cycling in back country,

    1 out of 2 people found this helpful. Was this review helpful to you?
  38. James (verified owner)

    Great bang for the buck, i use it daily

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  39. Anonymous (verified owner)

    Works well.

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  40. Mark (verified owner)

    So far very good, using in an infra red illuminator

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  41. Gary (verified owner)

    You can’t really “review” batteries without many months or years of use.

    However, upon initial purchase and use (one month), all I can say is expect extremely long charging times. The times represented by the company are no where near true.

    In fact, charging times are about twice what is marketed. I used a high powered USB point to ensure the best times, as I had already read about the charging time issue from another review. That reviewer was spot on.

    Otherwise, the batteries seem to be extremely well made and of great quality. Are they worth Fenix’s extra mark up? That’s for you to decide. I’m on the fence until I see some true run times.

    1 out of 1 people found this helpful. Was this review helpful to you?
  42. Anonymous (verified owner)

    Great service and easy to charge battery!
    I will advise that while I bought 2 batteries , the display lights as they charged differed (one stayed on and one didn’t) but both still charged and powered the flashlight well!

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  43. Anonymous (verified owner)

    works extremely well

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  44. Thomas Mack (verified owner)

    Great battery

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  45. John Petersen (verified owner)

    Having owned many different 18650 batteries from different companies you start to see why the cheaper ones are less expensive. I can say without hesitation that Fenix’s 18650 batteries are top quality and will last you a long time with excellent performance.

    1 out of 1 people found this helpful. Was this review helpful to you?
  46. Jonathan Keith (verified owner)

    Bought these as spare/additional batteries for a range of fenix lights I have. I went with the 3500mAh batteries to give extra time to my lights’ battery life.

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  47. William Long (verified owner)

    Have only used one so far but it is working fine.

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  48. Jeremy F. (verified owner)

    I was very pleased with the service and the product, I will only use Fenix from here on out.

    1 out of 1 people found this helpful. Was this review helpful to you?
  49. James Lucas (verified owner)

    These batteries will make your TK 75 light up the night with its unbelievable brightness! Wanna kill a vampire with your blinding rays? Use this kick butt battery with its Uber cool recharge port and LED lights and give the undead something to really hate you by. Wanna hold the thunderbolt of lightning (very, very frightening!). Be like Galileo and get your man paw on this beast of a battery to power your thunder of Thor flashlight. Cheers

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  50. Anthony P. (verified owner)

    Long lasting great batteries for home inspectors use wouldn’t be without them

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  51. James A LaBine (verified owner)

    My first experience with this rechargeable. Excellent.

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  52. Scott M. (verified owner)

    Better than aftermarket

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  53. James H. (verified owner)

    Quality long lasting charge, I keep spares to swap when one needs charged

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  54. James P. (verified owner)

    Good batteries and perfect service. Arrived in a timely fashion, well packaged, no surprises.

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  55. Johnny (verified owner)

    working great

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  56. Jon T. (verified owner)

    I found Fenix batteries to last a long time when “on the shelf” and still have the power for full turbo when needed

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  57. George H. (verified owner)

    So far so good

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  58. Anonymous (verified owner)

    Charges easily and holds a charge for a long time.

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  59. Joe C

    I’m returning for another order. The first two 3500mAh worked and working great – at least one of them. I can’t find the 2nd one atm . . . misplaced or “borrowed”. Finally, honestly rated 18650 cells, not exaggerated high mAh claims. With protection circuitry, and the USB rechargeability for me is added assurance I can keep power available when away. I always use a quality at-home plug-in recharger. That’s how I KNOW these are honestly rated, as my recharger will easily pick out the dishonest ones.

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  60. Stephen (verified owner)

    Always good to have an extra.

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  61. David G. (verified owner)

    Very high quality and holds their charge well.

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  62. Matt R. (verified owner)

    Just like the ones that came with the light. Just need a few spare!

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  63. William D. (verified owner)

    Great so far. Holds a charge extremely well.

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  64. Anonymous (verified owner)

    Pretty long lasting.

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  65. Steven Lawson (verified owner)

    This is the second time that I have purchased a this battery and already it is not holding a charge.

    1 out of 1 people found this helpful. Was this review helpful to you?
    • Dianne (store manager)

      I will have warranty contact you.

  66. Alan K. (verified owner)

    Better value than buying disposable CR123

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  67. Ken E. (verified owner)

    Good quality and fast shipping!

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  68. James N. (verified owner)

    Excellent quality

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  69. R R. (verified owner)

    Very pleased, my light is working great again!

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  70. Anthony Perry (verified owner)

    Top quality.

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  71. Jesus Barrera (verified owner)

    Very good !! And great deal for this battery!! I don’t need to buy more 123A batteries also those batteries are expensive!!

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  72. patrick costello (verified owner)

    high quality 10 of 10 rating, super bright light

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  73. Charles W. (verified owner)

    2600mAh battery with built in charging is great in a PD35 V2.0 light. Lasts a long time between charges, it works well.

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  74. Tim Y. (verified owner)

    Great quality and long lasting in flashlight

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  75. dylan (verified owner)

    cant use a flashlight with out one

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  76. David (verified owner)

    What can I say, the battery did it’s job and I like the extra run time I get from it.

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  77. Frank W. (verified owner)

    Great batteries.

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  78. Murad (verified owner)

    top quality batteries will only use Fenix li-on

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  79. Jon Kennedy (verified owner)

    return user, best battery on the market

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  80. William (verified owner)

    Good quality. Charge lasts a long time.

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  81. Eric (verified owner)

    Nice rechargeable lithium. Probably won’t know for years how many recharges it will take but like them so far.

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  82. Anonymous (verified owner)

    lasts longer than I expected

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  83. Keith W. (verified owner)

    on time and easy to do

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  84. Anonymous (verified owner)

    Great set of batteries.

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  85. Enrique C. (verified owner)

    Much need power for my new LD75C flashlight.

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  86. Robert (verified owner)

    Meets expectations.

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  87. Mark Stevenson (verified owner)

    Great Product

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  88. John S. (verified owner)

    These batteries power the flashlight for a long time. They hold a charge for months.

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  89. Gavin C. (verified owner)

    I’ve only had the battery a couple weeks but it works just fine and has not failed in any way.

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  90. Richard Werbelow (verified owner)

    These are the greatest!!! No charger just a micro USB and time and you are ready to go. I am a nurse and use them several hours a day during assessments and procedures. Charge good for hours. Light, no heavy battery pack hanging off the back of your head and no tail!! and bright…bring your sunglasses and tanning lotion but never hot. LEDS are awesome.

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  91. Brian Ferrell (verified owner)

    Long lasting battery, tough built construction and hold a charge for a long time. Worth buying for sure everytime!

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  92. Stephen K. (verified owner)

    Super batteries. Long lasting and powerful.

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  93. Dan Burkhardt (verified owner)

    Bought a cheaper brand and they sucked. Got these and they work great.

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  94. Anonymous (verified owner)

    Good Product and no issues!

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  95. Michael (verified owner)

    Very sturdy and well sealed compared to some tiers brands I’ve seen

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  96. Robert V. (verified owner)

    The batteries have been great so far. They deliver an impressive amount of juice. Well done, Fenix!!

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  97. Dave (verified owner)

    Run time on this battery is pretty impressive. With one of these for a spare that’s enough batteries to last me for a very long time.

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  98. Anonymous (verified owner)

    Very reliable

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  99. Susan V. (verified owner)

    I purchased your Fenix UC35 flashlight a few months ago. When I went to recharge the battery it still did not work, so I bought another battery. It would NOT charge up either. So I now have two batteries and a flashlight that don’t work. I’m a volunteer Sheriff and rely on my flashlight at night and this one fits my leather light holster, Now I’m going to have to spend all that money again (out of my pocket) on another product… NOT A FENIX. NOT a happy customer.

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    • Dianne (store manager)

      Susan – unfortunately there was a bad batch of batteries with the UC35. I have asked warranty to contact you about getting you a good battery.

  100. Benjamin M. (verified owner)

    It works. Seems to lose charge quickly. But it works.

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  101. Patrick K. (verified owner)

    Great Battery!!!

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  102. Anonymous (verified owner)

    This battery input for the AC charger is extremely universal, fits most devices

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  103. Luke Wholey (verified owner)

    Great batteries

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  104. John (verified owner)

    Wonderful!! Totally worth the money, wondering what other battery powered flashlights I can use this product for!

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  105. Jon A. (verified owner)

    These batteries last a long time with multiple charges. Works great!

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  106. richard lynn (verified owner)

    Great so far

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  107. Josh (verified owner)

    Easy to recharge and seem to perform wonderfully

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  108. Miguel Carranza (verified owner)

    I buy them to have extras and they really work.

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  109. Jessy (verified owner)

    Excellent batteries. Only purchased one as of now but all I need as for these batteries are very reliable, effective in the field. Fenox comes through with quality goods

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  110. William B. (verified owner)

    Awesome battery. Last a long time and love the integrated charging port.

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  111. Anonymous (verified owner)

    Good quality batteries and fast shipping

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  112. Jennifer H. (verified owner)

    Works great

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  113. Anonymous (verified owner)

    Work great

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  114. Fernando H. (verified owner)

    Works great

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  115. Lawrence Ritter (verified owner)

    Excellent Quality – long lasting

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  116. Paul M. (verified owner)

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

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  117. Joe (verified owner)

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

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  118. 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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  119. Randy R. (verified owner)

    Long life

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  120. 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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  121. james cooper (verified owner)

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

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  122. Daniel D. (verified owner)

    These batteries are expensive but worth spending the money.

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  123. 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 (store manager)

      I will have someone from warranty contact you.

  124. George Kreke (verified owner)

    Works greak.

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  125. Jay (verified owner)

    Long lasting battery. But nothing special

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  126. Chad Oatley (verified owner)

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

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    • Dianne (store manager)

      I will have someone from warranty contact you.

  127. Bruce (verified owner)

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

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  128. Brian C. (verified owner)

    No real charger required.

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  129. 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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  130. Robert V. (verified owner)

    So far as good.

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  131. Anonymous (verified owner)

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

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  132. Brett VanMeter (verified owner)

    👍🏻

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  133. Tracy Glover (verified owner)

    They work fine

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  134. david saxton (verified owner)

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

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  135. Bill S. (verified owner)

    Worked great

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  136. Robert V. (verified owner)

    Excellent so far.

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  137. Michael M. (verified owner)

    Pricey but great product

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  138. Raul M Garcia (verified owner)

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

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  139. 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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  140. 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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  141. David (verified owner)

    They work. Too soon to know how well.

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  142. Taylor Elkins (verified owner)

    Great

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  143. Hyrum (verified owner)

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

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  144. Anonymous (verified owner)

    Great batteries

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  145. David W. (verified owner)

    long lasting

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  146. Anonymous (verified owner)

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

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  147. Paul D (verified owner)

    Great to have some spares at the ready folks!

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  148. Adam (verified owner)

    Great batteries long run times

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  149. 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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  150. Daniel S. (verified owner)

    Easy to charge and works well

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  151. 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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  152. 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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  153. Russell Taylor (verified owner)

    It recharges. There u go.

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  154. Anonymous (verified owner)

    very good

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  155. James Norlien (verified owner)

    They work to spec for the advertised lifespan

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  156. Kristipher (verified owner)

    Great

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  157. Anonymous (verified owner)

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

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  158. Shaylon (verified owner)

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

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  159. Alan Y. (verified owner)

    Like the micro usb charcing

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  160. Sean M. (verified owner)

    Works great. Would purchase again.

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  161. GREGORY (verified owner)

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

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  162. John Jensen (verified owner)

    Don’t know yet depends how long they last

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  163. 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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  164. michael powers (verified owner)

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

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  165. 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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  166. sean p. (verified owner)

    Consistent good quality batteries. No complaints.

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