18650 Rechargeable Battery Flat top 3.7v Lithium Rechargeable Batteries for Headlamp, LED Flashlight, 2Pack

They work as advertised. Are a slightly shorter than I thought, still as needed. Will buy some more of these at a laterr date

Holds charge and fits as expected

Got these for a YLL Vape, the first 2 charges the batteries did not charge right and they did not hold charge for very long. the 3rd charge i left it on the charger well past then it said it was full and that seemed to work the batteries worked much better after the "over charging"

Perfect for what I needed!!!

TL;DR - The battery is 3.12 millimeters shorter than the standard size of an 18650 battery.I purchased these batteries to replace the rechargeable 18650's in a Blink Outdoor Camera Solar Charger. The blue one came with the Blink Solar Charger, labeled "Amazon Services [18650 Lithium Ion], 8650, 3.7v, 3200 mAh, 11.84 Wh."The pink/purple one is what I received from the seller, labeled "18650, 3.7v, 3300 mAh"The blue one is 68.99mm in length and the one from the seller is 65.87mm in length, which does not fit properly into the device (too short). I had to make a modification by bending the contacts a little as the camera had to be up and running immediately, so it *works*, but only just.

Good product as far as just the right fit and battery for what I needed. The only problem is these don't hold a charge for only a few minutes just like the other one I had.

Great long lasting batteries

Love the color and works perfectly for an old fan I bought at a yard sale. I couldn’t be more pleased!