3.7V 2 Packs Button top 18650 Rechargeable Batteries for Headlamp, LED Flashlight, Electronic Devices etc

I have a few of the Kami (also sold on Amazon) wireless security cameras outside that take these type of rechargeable batteries. The cameras come with the batteries and a charger, but when its time to recharge them, I decided to buy another set of them so that I could just go up the ladder once to swap the batteries. A full charge takes about 4 hours. Having the extra set already charged up saves me time! It turns out that these batteries also work in a portable fan that I have. Tip: be certain that all the numbers are the same as the batteries your original device requires. There are some numbers that do not matter, but the Volts and mAh need to match. Also, when you get them, take a permanent marker and draw a + and - really big on the correct ends so that you don't mistake one side for the other and damage your device. The ends look so similar and the + and - markings are very tiny.

Exactly what I needed battery that came with flashlight was dead. Bout these and works fine. I'm using the battery very little been charged a month or more and still turns on

I needed the batteries for my ring doorbell

Added batteries to my Owl security cameras (2 are required for operation, each camera can hold up to 4 batteries). I was told by Owl that 4 batteries would extend the life of a charge. Not true. 4 batteries and yet I’m still charging the camera every 3 weeks (each camera) (not once or twice a year as advertised by Owl). So much work to keep them all charged all the time! I’m not sure if it’s a battery issue or an Owl Home Security issue.

These batteries were replacement in my LED headlights. Fit and worked great

Product works as described

So glad I was able to locate and make this purchase. My fan is back working. Yay

One of the batteries works fine, but one was defective