3.7 Volt 2200 Mah Rechargable Battery

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.

One of the most strong light . With extra rechargable battery. And can use it , like power bank 4000 mAh for cellphone. Looks like xp11r model. They are my good helper .

Correcting my previous review. I didn't understand 20000 mAh is at 3.7V, so 12800mAh is at 5V is correct. My bad. Now I wish I had kept this battery pack to give it a real chance. It is smaller and lighter than another 20000 I just picked up. If a human reads this, you can delete my first review.

I've this flashlight for almost 4 years now and use it on the job pretty much every day. The 3.7 volt Li-Ion rechargeable battery is just starting to go but still works. It so convenient just to plug into a usb a charger.

I couldn't find the 3.7 volt version when buying the charger, batteries and tactical flashlight so I mistakenly assumed (I know, I know...)it would charge the 3.7 volt batteries, too. It doesn't now I must buy the 3.7 volt version and am stuck with 2 ea. of the 3 volt batteries w/charger that I don't want or need. but it does charge quick and stays charged, too.

The B&H site lists this as 6600 mAH, but it is 7800 mAH capacity - nearly 4X the standard 2200 mAH pack. I used to worry that the 2200 mAH packs would barely last long enough to record a 50-minute scene on my Sound Devices 702. With this beast, I can record continuously for 3 hours and still have plenty of reserve. I use the Dolgen charger and have fast recharge time as well.

It holds two camera Fujifilm NP-W235, or two Sony NP-F 2200 mAh batteries, so for that it works. It's not so great holder NP-F 6600 mAh or bigger batteries, though.... It's not respecially versatile, but it does work.

Works as well or better than OEM especially since it's higher a mAh battery.

worked just like the product I replaced except uses a double A battery instead of a nine volt.

Good battery, even at 6300 mah still better than my 7200 aftermarket