1st charging battery

"I never had a battery with a built in charger! So I was skeptical and was looking for a separate charger on Fenix site. I could not find one but needed one for my new Fenix light. My consern was not knowing when it would be fully charged? Upon charging the first time I seen a single light on the battery flashing. I figured it would go solid when charged? But to my suprize it had 3 lit lights when fully charged, I thought this was amazing that this small of a battery could have a charger as well inside! I have not yet had to recharge it as I only have this light for dress clothes and I only have had ised it a couple dozen times. It seems to hold a charge well."

— Mark E. (5/5)

Extra power the easy way

"This battery is awesome!!! It offers even more capacity than the standard 5000 battery, and makes a huge difference when running things all night at high levels. Worth the purchase, I wish it would fit in my headlamp battery compartment but it wont, it works great for the PD40R though!"

— John A. (5/5)

Very handy

"This battery is a great little power bank. I've already charged my phone with it."

— Dave B. (5/5)

Amazing back-up

"I use the 3200 lumen light for mountain biking and it lights the trails amazingly. I have a backup battery in case I extend my night adventures . It’s a small compact powerbank which I haven’t used it as such, but having it gives me reassurance that I have backup capability to charge my phone."

— Hans L. (5/5)

Great battery

"I love having a spare so I don’t have to leave my light plugged in. Swap batteries and keep on trucking!"

— WALTER H. (5/5)

"Excelente"

— Norberto (5/5)

Perfect.

"Perfect."

— Charles H. (5/5)

FENIX TK16 V2. 0

"It is a very good product. I am very glad to carry on it with me wherever I go."

— RISOLDO S. (5/5)

More power

"More power"

— Nicholas S. (5/5)

Versatile - Great Capacity My

"Versatile - Great Capacity My custom TK17 arrived with the L21-6000B battery. Now with two, I have a backup battery and a 6000 mah power bank. A very versatile and light weight option for my day pack. It also works with my CL27R lantern. Thanks Fenix for the quality products!"

— Stanley W. (5/5)