Excellent Battery – Long Runtime and Convenient USB Charging

"The ARB-L18-3400U is an outstanding rechargeable battery that delivers exactly what it promises. The 3400mAh capacity provides excellent runtime, making it perfect for high-performance flashlights and other demanding devices. The built-in USB charging feature is incredibly convenient. Being able to charge the battery directly without carrying a separate charger makes travel and everyday use much easier. Charging is simple, reliable, and efficient. Build quality is excellent, as expected from Fenix. The battery holds its charge well during storage and provides consistent performance throughout the discharge cycle. I've experienced dependable operation with no noticeable drop in power. If you're looking for a high-capacity, reliable, and convenient 18650 battery, this is an excellent choice. Premium quality, great performance, and outstanding convenience. Highly recommended! ⭐⭐⭐⭐⭐"

— Artuom K. (5/5)

Having a spare battery that

"Having a spare battery that can be charged directly with a usb-c cable means I don’t need to carry an external charger for the battery! Since my phone uses the same cable I don’t even have to carry a different cable just for the battery!"

— GEORGE R. (5/5)

Good quality battery and handy charging plug built in.

"Works as advertised. I like using the "U" batteries when I am on the road since I can recharge them using the same cord as my cell phone."

— Stephen M. (5/5)

"Some of the best batteries on the market of their kind."

— Joel (5/5)

Ready and Prepared

"Better to carry a spare battery just in case. Keeping with the saying, “ one is none, two is one”."

— MICHAEL M. (5/5)

Awesome

"Works like it should long lasting"

— Jimmy b. (5/5)

2nd One I purchased

"Bought a 2nd one, I think that speaks enough."

— Robert L. (5/5)

It’s just a battery but

"It’s just a battery but a damn good one:) No complaints at all."

— Akim R. (5/5)

The light is perfect for

"The light is perfect for edc I hardly notice I’m wearing it and has excellent mode spacing which makes it extremely versatile can’t go wrong with any fenix product the quality is in the name wouldn’t buy no other brand the extra battery deal was well worth it charge one drain the other battery are also very high quality and will not let u down."

— Charles D. (5/5)

Bought the spare for part

"Bought the spare for part of the birthday present so when doing a 100M race, he can switch out easy enough (even without taking it off) Just in case. . . battery life seems to be great so. . . maybe one week if he forgets to charge, this one will be handy. . ."

— Charlotte B. (5/5)