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

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.

Batteries work good in my mod. They last a long time. Happy with purchase!

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.

After charging, these batteries lasted 12+ hours before recharge. Don't know how long these will last, but for me this type lasts 18 months to 3-4 years.

Good buy. Works well

Perfect batteries

Perfect. Exactly as described

These batteries work perfect and are significantly cheaper than any vape shop for comparable. These batteries however are extremely overrated on their 3300 mah claim. I found them to be on a good day maybe 2000 but they do last at least half the day for me and I'm a heavy vapor but only time will tell on the longevity.Update after a month or two of use. These do not hold a charge worth a crap! Don't waste your money unless you want to go through about eight of these in a day like I do for my vape and I do vape pretty heavy but I would rather pay a little bit more money and just go through two of them. Garbage!