14500 3.7 Volt Lithium Rechargeable Batteries

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

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.

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.

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!

I already had two of the Nikon EN-EL15c Rechargeable Lithium-Ion Batteries, but I recently purchased the Nikon MB-N11 Power Battery Pack with Vertical Grip for my Z7ii which takes two of the EN-EL15c batteries, so having a spare made sense to me. I also own several EN-EL15 batteries for my D850 and have experience zero problems with Nikon batteries.

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.

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.

This is my first time purchasing rechargeable Lithium Ion batteries with a built-in USB charging port. That's a very convenient way to charge the battery especially if you forgot the adapter at home.

I purchased this, not for analyzing rechargeable batteries, but for measuring capacity of several different brands of lithium AA batteries. There is a common knockoff of this product that didn't actually work for my use case, but I did use it for charging batteries, and I can say that the user interface of the Powerex is much more intuitive and easier to use. As far as customer service, I emailed Powerex to find out if this would do what I was trying to do, and a representative called me and let me know that while it is not an officially supported use, it would work, which proved to be true. I would definitely buy more products from them after having that experience.

Coast’s lithium battery ZX450 all batteries that Coast supply are excellent. Reason I say this is because rechargeable lithium batteries sometimes have issues like premature failure. Things like not taking a charge, memory issues, and short run times to name a few. I do handle lion cells as recommended which is important for long life. Coast batteries and my lithium cellular batteries are the only batteries that work as promised regarding rechargeable lithium cells. I expect an a dramatic improvement with rechargeable lithium batteries of all sizes any time.