18650 Rechargeable Battery 9900mAh 3.7Volt Li-ion Batteries Button Top 4 Pack for Flashlights Headlamps

Work wellThank you

Good batteries for my flashlight,easy to charge.

We ordered 4 of these batteries.What we liked about these batteries was their initial brightness after the 1st charge.The FIRST thing we disliked about them was the more than ordinary length of time it to charge them! We thought, "Well, afterall they ARE 'new'." I used one set of two batteries in a flashlight to walk my dog down the driveway, and it quit before I got to the house! We are in the suburbs/county and there is no outside lighting. So, fortunately, I had my cellphone to use it's flashlight!The next night while those 2 batteries were recharging (over 18-20 hours!!), I used the flashlight with the other 2 batteries. Same thing!!It's unbelievable that the life of these batteries (when FULLY CHARGED) is less than the time which it took them to charge!

We found these to be a little wider than the 18650 battery that they're meant to replace. So they worked well in some of our flashlights but they wouldn't fit in others. All of them use 18650 batteries and had Energizer and some other brands in them before non-rechargeable. They just don't fit in everything.

Heading lamp batteries. Good value.

Great value for Lithium ion batteries of this size and mAh rating. It is about a $1.00 more per battery than a AA Lithium ion battery.

Looks great works great time will tell how long I guess

Easily replacing previous solar lantern batteries. Same size. A little high Mah. So far working well