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Fenix ARB-L21-5000 Rechargeable Battery

(57 customer reviews)

$33.00 $23.95

SKU: ARB-L21-5000 Category:

ARB-L21-5000 is a high-capacity 21700 Li-ion rechargeable battery built for more power and longer runtimes. Additional features include a protection circuit in the anode to help prevent short circuits, over charge/discharge and over heating. Pressure relief vents which expel waste gas in the rare case of an internal short circuit preventing an explosion. Battery capacity up to 5000mAh. 500 charging cycles.Currently compatible with the HT18, LR35R, PD36R, PD40R V2.0, TK22 V2.0, TK22 UE, and TK30. The TK22 V2.0 and TK22UE require a charger to charge the battery. Important Note: THIS BATTERY IS NOT COMPATIBLE WITH 18650 FLASHLIGHTS OR OLDER STYLE CHARGERS. COMPATIBLE CHARGERS ARE THE ARE-A2ARE-A4ARE-D1 OR ARE-D2.

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Description

Specifications of the ARB-L21-5000 Rechargeable Battery

  • New 21700 battery type
  • 5000mAh high capacity
  • Protection circuitry to prevent short circuits
  • Pressure vents to prevent explosions
  • 500 charge cycles
  • Currently compatible with the HT18, LR35R, PD36R, PD40R V2.0, TK22 V2.0, TK22 UE, and TK30.

Capacity: 5000mAh
Voltage: 3.6V
Charging Current: Recommended 1A, maximum 5A
Weight: 2.6 ounces (72.5g)
Size: Length: 2.99″ (76mm) Diameter: 0.85″ (21.5mm)
Warranty Period: 12 month from date of purchase

57 reviews for Fenix ARB-L21-5000 Rechargeable Battery

  1. Brad (verified owner)

    Excellent battery

  2. George B. (verified owner)

    Great little battery that packs huge power.

  3. Anonymous (verified owner)

    The case fits the battery well.

  4. louis sattler (verified owner)

    a truly 5000mah, not amazon scam batteries

  5. Rich

    Dropped my PD36R on concrete battery failed.It got hot so the safety devices work.flashlight still works. Dont drop it.good light expensive battery.

  6. Anonymous (verified owner)

    Great product!

  7. Buddy G. (verified owner)

    Good quality

  8. George (verified owner)

    Another great product from Fenix, never use any other brand. Thanks so much for your products.

  9. Ricardo delprado (verified owner)

    Spare battery and back up power

  10. Anthony Q. (verified owner)

    Was a gift with flashlight. I’m sure usual excellent quality.

  11. Terri M. (verified owner)

    Rechargeable batteries are so practical!

  12. David See (verified owner)

    Massive unbelievable battery

  13. Robert (verified owner)

    Works and charges great!! Love it.

  14. Anonymous (verified owner)

    Also super cool

  15. Paul S. (verified owner)

    Lots of power

  16. Anonymous (verified owner)

    Works great

  17. Brian (verified owner)

    Great battery… what else can I say !

  18. Jeffrey (verified owner)

    It’s good for back up

  19. Fong Y. (verified owner)

    battery work very good. happy with it.

  20. Josh (verified owner)

    Lasting a really long time so far.

  21. Kevan Western (verified owner)

    Good battery life

  22. David Phillips (verified owner)

    good to have a back up

  23. John P. (verified owner)

    Huge capacity. Works excellent and lasts a long time.

  24. Anonymous (verified owner)

    Great

  25. Brendan (verified owner)

    Charged up very nicely, will be interested to see how long it holds a charge.

  26. Frederick (verified owner)

    I’ve had great success in ordering from Fenix. They’re really on the ball. This is my second order of the same flashlight and battery as I was so pleased with the first order. I love the TK22 UE and the rechargeable battery as well. Thank you Fenix!

  27. Paul W. (verified owner)

    This thing is a beast. I haven’t used this one yet, I purchased it as a spare, and the one that came with the light is still going strong on the initial charge.

  28. Jose Salazar (verified owner)

    Two of the earliest batteries got distorted. Left in car and maybe that was the problem. Those were 18650 batteries. Hope these new batteries will prove to be better.

  29. Anonymous (verified owner)

    crazy long battery life

  30. Richard (verified owner)

    Bought this for a spare. Didn’t really have to because with the extra capacity they last a looooooooong time.

  31. Michael D. (verified owner)

    This battery lasts a seriously long time. Great value.

  32. Jason (verified owner)

    Already have the lamp which I love, battery packs alot of long lasting power

  33. Makenzi Hill (verified owner)

    Ordered additional batteries for my husbands flashlight near our wedding in November last year. The batteries now no longer charge or work. We have 1 working battery that the charger does read so we know it’s not the charger. Very disappointed in the battery life for such an expensive battery. Less than 6 months is ridiculous.

    • Dianne

      I will have warranty contact you.

  34. Martin A. (verified owner)

    Been using fenix batteries for years with no issues.

  35. Robert (verified owner)

    Good battery a little overpriced.

  36. Gary L. (verified owner)

    Have not used them a lot yet, should work very well, I plan to use them as back ups when long usage is needed.

  37. Joe G. (verified owner)

    All Fenix products are top of the line

  38. Bill M. (verified owner)

    Always like a back up battery just in case. The cost is minimal when ordering and can’t knock the convenience of ordering both at the same time.

  39. Ronald (verified owner)

    Good battery

  40. Robert (verified owner)

    Very high energy storage capacity in a small volume.

  41. Dan (verified owner)

    Great powerful battery! Will be buying a couple more for spares and future flashlights.

  42. William Naus (verified owner)

    Great service…third time buying and will buy again

  43. Theron T. (verified owner)

    Great battery, just wish it was a little cheaper.

  44. leonard m. (verified owner)

    Terrific power source long lasting.

  45. Ron (verified owner)

    Long lasting and powerful battery!!!

  46. leonard (verified owner)

    Great power supply long lasting!

  47. robert jolliff (verified owner)

    excellent, high capacity!

  48. James Fitzsimmons (verified owner)

    Good capacity battery

  49. Michael (verified owner)

    Light and powerful!

  50. Doug F. (verified owner)

    Lasts a long time

  51. Eric (verified owner)

    Great capacity in my new flashlight. Had it and use it daily, still charged after 2 weeks of morning and evening use.

  52. Murad (verified owner)

    Quality battery you’d expect from fenix

  53. Brandon Lambert (verified owner)

    Great battery

  54. Rich (verified owner)

    Took 3 hours to fully charge the battery, have not charged it so far. I use it on a daily basis and the PD36R shines through the darkness. Very good purchase.

  55. Ronald Makarewicz (verified owner)

    Great

  56. John E. (verified owner)

    Always good to have a spare battery. A real powerhouse at 5000 mAh. Charged pretty quickly using the usb-c of the PD36R.

  57. Todd R. (verified owner)

    Great product

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