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18650 rechargeable batteries are high-capacity batteries 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 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. Fenix’s 18650 batteries have a guaranteed lifespan of 500 charge cycles. This means that the battery will recharge to at least 75% of its original battery capacity 500 times over. Compared to single-use batteries, rechargeable batteries are both cost-efficient and more useful for the consumer, offering extended runtimes and capacity on a single charge. Not only that, they are also beneficial to the environment by limiting the amount of single-use products and discarded chemicals. Overall, Fenix’s 18650 batteries offer a safe, time and cost-effective solution for anyone looking to power their high-lumen flashlights. Always make sure to purchase li-ion batteries from an established and trusted distributor to avoid purchasing faulty, potentially dangerous products.
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
* Please note that the ARB-L18-4000U battery is not compatible with the following lights: PD32 V2.0, PD35 V3.0, TK35UE V2.0, UC35 V2.0, HM60R, HM61R V2.0, BC30 V2.0
For commercial orders and large purchases, contact us at (888) 775-9996 x6 or GET A QUOTE
WARNING. Be aware of counterfeit Fenix merchandise in the U.S. marketplace. READ MORE >>
Overall rating: 4.772947 / 5 from 414 reviews.
Fenix 18650 Rechargeable Batteries are highly praised for their excellent quality, durability, and cost-effective value. Customers appreciate the safety features, long lifespan, and environmental benefits. Fenix offers outstanding service and fast shipping, making these batteries a reliable choice for high-lumen flashlights.
Review topics: ["quality","light","service","issues","battery","charger","customer service","works","capacity","performance","fenix","holds","port","tool","headlamp","representative"].
"Customer Service recommended the 18650 batteries for the TK20R flashlight. The batteries with the U suffix are a little too long for the flashlight to seal properly. ARB-L18-4000: Fits correctly ARB-L18-4000U is approximately 2. 8mm longer, because you can charge the battery directly (outside the flashlight) with a USB-C cable."
— Dave V. (4/5)
"These batteries do not work in any of my headlamps, Fenix or other brands. They are 5mm longer than 18650s. They might get damaged when cap tightened all the way."
— Mark W. (1/5)
"Not sure if the batteries don't last a long time, or it's the headlamp. But not what I expected. Good quality, just don't last a long time. I guess unless I don't want to light anything up, which defeats the purpose."
— P B. (3/5)
"Good quality batteries that I can trust. They hold the charge well and are dependable in extreme weather."
— Amin G. (5/5)
"Holds charge for several hours again with the new battery. The battery and new headband brought my old headlamp back to new."
— Ron P. (5/5)
"These last forever! And work better in my other brand lights than their brand"
— desotopaw (5/5)
"I needed new batteries for my Fenix bike light and these are perfect! They fit properly (no rattle, not too fat). They charge properly and last a long time."
— Vicky D. (5/5)
"Perfect battery for the best flashlight."
— WM J. (5/5)
"Used in colder, but not that cold, weather (40-55 degree F) for adventure racing world championships. Raced for 8 nights, 9 days. Used on the lowest setting to preserve light. Not sure if it was the cold, but my light died after 4 hrs of riding. Super disappointing when you have 8hrs of dark left to bike!"
— Sylvia G. (3/5)
"I purchased a few Fenix flashlights several years ago. They have worked great. Unfortunately when I recently bought a replacement battery (18650) it was not of the same quality. It only holds a charge for a few days, and is barely useful. I don't know if I got a "dud" or if they are all like this now. Bummer."
— Jesse S. (1/5)
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