JESSY 18650 Rechargeable Battery Flat Top，3.7V Lithium Batteries 3300mAh High Capacity for LED Flashlights, Headlights,Small Fans, Toys (2 Pack)

Excellent cells. Correct size and shape…I replaced the battery in my Bose soundlink speaker…charged it up and it’s working great.

Great they hold a charge for long time

A lot of the random unknown battery brands like to put outrageous capacity specs on their cells. 3300mAh is pretty reasonable for the physical size. Unfortunately, in testing, none of the cells met this spec, though they only came in at an average just a little under the spec. If Jessy spec’ed it at 3000mAh, this would be golden as I averaged around 3100mAh across 4 cells with multiple tests. They seem to be pretty reliable and consistent so probably a fine battery to use that comes close enough to the spec to not be too mad. Definitely higher than a lot of the lower capacity 18650 cells out there.

Batteries work great in my cordless smoker. Hold a good charge. No complaints so far.

Exactly like described and works well with my vape device.

I bought a U Console from ClockworkPI and two LILYGO T-BeamSUPREME. For the UConsole I bought this brand with the button top in a 4 pack. Found out the Lilygo can't take the button tops, they're slightly too long. So had to buy these. Perfect Fit.Pros:-NON EXAGGERATED AMPERAGE, now I can't tell if they're fully 3300mAh, but in my UCONSOLE where they're ran in PARALLEL, meaning doubling up the amperage, it's been hard to kill the batteries, and took forever to charge, since apparently you have to go into Linux and set the charge voltage since it literally took nearly 20hrs to charge both cells from 0% to full. So around 400mAh. Meaning if they're not full 3300, they're at least around the 3000 range.Cons:-A little pricey but that's the cost of honesty. I think I read the current theoretical max that an 18650 can store is 3500mAh. Anything claiming more than that is lying. There is tech out there that could exceed that, but would literally double if not quadruple the price like Lithium SILICON CARBON cells. Could near 5000mAh per one battery.Conclusion:Jessy is not exaggerating or claiming unrealistic numbers, they hold up well, flat tops work great in LILYGO products, button tops work great in ClockworkPi products. 100% recommend them. STAY AWAY FROM SCAMMERS WHO CLAIM 9000mAh. Those batteries don't exist yet and even with Lithium Silicone Carbon tech most likely couldn't exist then either.

Charger says they’re charged, but they don’t work. I was hesitant about buying them and won’t make this mistake again.

Arrived on time and as described.