3.7V Button Top Battery,3000mAh Rechargeable Battery with USB Cable for Streamlight X Series Flashlights, Headlamps, Doorbells, RC Cars (1PS)

Charges fast and holds the charge long enough for your run of the mill lightsaber dual. This battery is a great value for the money. We'll see about the battery life when I set off to save the Galaxy.

This is a great purchase. I like how it has an indicator light that tells you once it is fully charged. I also love the little case that holds the battery!

Had an issue with UV flashlight, it stopped charging battery, looks due to some unit discharge protection. Was going to recycle it, but decided to give a try to this battery. Surprisingly it worked and now works with the old battery as well as on this new one.

bueno

When I first ordered this item, the case was empty, nothing was in it and I left this review, and the company contacted me, asking for info and if they could help, so about 5 days later, I received my replacement, it world perfectly, very happy. If nothing else the customer support is worth using the company, but the product is great also.

I'm a retired electronics technician, and I built an electronics bench to design, build and test all things electronic. I have several of these 18650 batteries that have internal BMS so you can recharge them without a lithium charger. This one is supposed to have 3000mAh, which is a bit more than the few others like this that I have. I did not do a complete drain and charge cycle, so not sure if it actually does have that much capacity, but I did run it non stop in a shortwave set I have, and it lasted as long as my others. The only thing about these that you need to be concerned is that they are about 7mm longer than most standard rechargeable 18650's. Point being, they may not fit your device being longer. Beware of that, as these may not fit your device. You can see the difference in size in one of my pics.

The battery works fine but the cable they sent had the wrong end that connects to the battery. It should have been an USB-c cable. I did not request a new cable from the company since I have so many USB-c cable and this was just an back-up battery for my flashlight when I go hiking.

Great deal for a quality replacement battery for electronics. The 3.7 volt battery has 3,000 mAh of battery life and recharges via USB.