3.7 V Flat Rechargeable Battery

Eartec Rechargeable 3.7V Lithium-Ion Battery for UltraLITE & HUB Systems

Great light does what I want is bright for size of you use 3.7v rechargeable it is pretty bright,. Only complaints is it is not as bright as the hp1 that this flashlight replaced on there market and the red ring on the tail cap so I use a old hp1 cap also doesn't have the anti roll thing so it will roll off a uneven surface

I have a Streamlight Polytac flashlight that only accepts 3v cr123 batteries. all other rechargeable cr123 batteries are 3.7v which is too much voltage, but these Watson batteries work great. I love how these Watson batteries came completely sealed. B&H photo seems like the only place that carries them. I hope they don't ever stop!

These new V.3 pouches are even better than the V.2. The rain covers are designed much better!

I had no complaints with v.1 but I can notice a (very small) improvement in the finish of v.2. It’s now less rugged which makes the image a little less “blurry”

This little flashlight packs a punch. The secret is in the 3.7 volt/ 2.4Wh 16340 with built in USB micro rechargeable port (on the battery). That battery gives this little flashlight a powerful long lasting bright beam. I'm glad that I purchased two of them. I keep one in my toolbox and the other in my car. Highly recommended.

If you’re looking for a replacement for your Ring Solar Pathway Light button type, 18650 3.7V battery, this it.

I bought this because I purchased a flashlight that will operate on either a AA battery (1.5 volts) or a 14500 battery (3.7 volts) and this battery works very well in this application. It fit in the flashlight just fine and it holds a good charge for a long time. I have only charged it up 2 times since I got it but I am very pleased and I will by again.

Great light but getting the rechargeable battery will make you use it so much more often.

This battery is everything I would expect out of a quality rechargeable battery.