The Fenix ARB-L18-3400 is a high capacity 18650 Li-ion rechargeable with a protection circuit in the anode to help prevent short circuits, over charge/discharge and over heating. The battery also includes pressure relief vents which expel waste gas in the rare case of an internal short circuit preventing an explosion.
I needed a replacement battery for my TK20R and a rechargeable battery for my TK16. Now with the single port charger and 2 batteries I should never be without a good light.
The Fenix ARB=L18-3400 is a great battery. Be careful of counterfeits sold elsewhere for the same or less money. The counterfeits fail early. I will only buy these batteries from Fenix.
Seth (verified owner) –
Love that I can use the same battery for a long freaking time!
Anonymous (verified owner) –
The batteries are excellent just like the previous ones.
john p. (verified owner) –
does what I want
Robert G. (verified owner) –
I needed a replacement battery for my TK20R and a rechargeable battery for my TK16. Now with the single port charger and 2 batteries I should never be without a good light.
ERIC (verified owner) –
Run time is great
Mathew A. (verified owner) –
Much better than cr123s. Holds a charge for a long time.
Anonymous (verified owner) –
My favorite 18650
ernest (verified owner) –
Awesome!
William (verified owner) –
The Fenix ARB=L18-3400 is a great battery. Be careful of counterfeits sold elsewhere for the same or less money. The counterfeits fail early. I will only buy these batteries from Fenix.
Carlos Gomez (verified owner) –
The best battery out there
Rose B. (verified owner) –
These batteries are great. I always like to have extras, just in case. And these work great.
Kenneth B. (verified owner) –
Great bstteries. Last a good work time