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Fenix ARB-L14U 14500 1600mAh 1.5V Lithium Ion (Li-ion) Button Top Battery with Micro USB Charging Port - Clam Shell

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Fenix Micro-USB Rechargeable 14500 1600 mAh Li-Ion Battery

No Need For Bulky Chargers!

Part of Fenix's innovative new line of rechargeable batteries, the ARB-L14-1600U 14500 Battery is a potent combo of power and convenience. The powerful Lithium Ion battery delivers 1.5 Volts of power and can hold a considerable charge of 1600 mAh, more than twice the capacity of a typical 14500! Even more beneficial is the cell's unique micro-USB charging port, allowing the battery to be recharged using one of the most common power cords used today rather than a bulky, expensive battery charger. The charging progress of the battery can even be monitored thanks to the multicolored LED power indicator located on the top of the battery. Potent in its power and user-friendly in its design, the Fenix ARB-L14-1600U is the perfect cell for nay rechargeable battery user.

NOTE: Do NOT attempt to recharge this battery in a conventional battery charger. Attempting to use any other charging method other than the micro-USB charging will result in damage to both the battery and the charger and possibly result in personal injury or property damage.


  • Micro-USB charging port allows battery to be charged without the use of a conventional charger (Micro-USB Cable NOT Included)
  • Advanced protection circuit built into the anode to prevent overcharging, over-discharging, and short circuiting
  • Three different sets of overheat protection
    • Pressure Relief Valve Protection
    • Separate Micro-Porous Protection
    • PTC Cathodal Block Protection
  • Multicolored LED power indicator glows red while battery is charging, green when charging is complete


  • Battery Size: 14500
  • Battery Chemistry: Lithium Ion (Li-Ion)
  • Nominal Voltage: 1.5V
  • Nominal Capacity: 1600 mAh
  • Charging Input: Micro-USB 5V / 1.0A
  • Estimated Charge Cycles: 500 cycles
  • Dimensions:
    • Length - 1.97" (50 mm)
    • Diameter - 0.57" (14.5 mm)
  • Weight: 0.67 oz. (19 g)
Battery Size:14500
Battery Capacity (mAh):1600
Battery Chemistry:Li-Ion
Battery Voltage:1.5
Battery Terminal Type:Button Top
Battery Shelf Life:10 Years
Product Certifications:CE, FCC, RoHS
Packaging:Clam Shell
Warranty:Battery Junction 30-Day Warranty, Fenix 1 Year Warranty
Return Policy:Battery Junction Return Policy
Product Weight:0.67oz
Product Dimensions:1.969" (L) x 0.571" (Diameter)
Country of Origin:China
Associated Battery Sizes:14500, AA, Lithium-Ion AA
By Jon
Costa Mesa, CA
Replace alkalines for LED
November 28, 2020
I have a LED "firefly" light that runs on one AA. An Enloop at full charge is below the threashold. An alkaline was giving me 10 or 11 eleven nights (it has a light sensor) in June. These would give me 5 nights. With a longer nights it is between 3 and 4 nights. They charge easily and 5 months of use have certianly paid for themselfs.
By Emmett
Johnstown, PA
Buggy in Zebralight H52
September 28, 2020
I use a AA/14500 headlamp frequently and had hoped to combine higher mAh with Li cold weather tolerance. However, this battery won't power the light on high. 30 seconds after power on at high, the light blinks and every 10 or so seconds therafter. It works on lower levels but I need the high level. I had thought the high level would just be less bright a la using an alkaline, but probably something with the light circuitry and the battery circuitry aren't playing nice at high draw.

I will try this in the outdoor thermometer sensor this winter and hopefully be able to stop buying Li primaries for that device.
By Matthew
Wasington, NJ
Only works in ones that take protected
December 31, 2019
It does a great job in the flashlights I have that it does work in. But just make sure if you buy it that your flashlights take protected cells otherwise it most likely wont work. But I am very happy with my purchase and will buy more if needed.
By HawkEye1Seven
Incredible battery
October 18, 2019
These things are awesome, powerful, long-lasting, easy to recharge. Too bad it took this long to come out with. I run one in my Fenix E12, great combo!
By Robert H.
Fleetwood PA
A great mistake!!!
June 30, 2019
I purchased 2 of these batteries when I was in a hurry. I saw 14500 and just thought they would be 3.7 volt batteries that all my AA lights require to get full power from them. When they arrived at first I was disappointed and I was going to return them. I already had 24 AA rechargeable batteries laying around not being used because when I need them they are always discharged and they are only 1.3 volt each. Anyway Rather then just send them back I decided to give them a try and I am very glad I did. They are much much better than the old rechargeable batteries I had. They are a full 1.5 volt and they do not self drain like my old batteries did. I have been using them for several months now and I am planning on purchasing more of them. I was going to order a lot more however after reading one of the other reviews saying they do not work well in am radios. I may only purchase 4 or 8 more. I have been using them in controllers, computer mouse as well as in several other devices and I have been very happy with them. My only fear now is the kid grabbing the 3.7 volt 14500 batteries and sticking them in the Wii remotes and frying them. Other wise they seem to work very well in everything I have tried them in. when i order more of them eventually I will try them in an 11 meter am radio and see if they work or not before purchasing even more of them. I have been very happy with them so far and I would recommend them for most AA battery uses.
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Fenix ARB-L14U 14500 1600mAh 1.5V Lithium Ion (Li-ion) Button Top Battery with Micro USB Charging Port - Clam Shell

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