I bought 4 pieces and they reached close to 3500mA. They lasted for about six months at the 15W I was vaping. When I decided to vape daily at 25W, the batteries within a month dropped to 2300mA and 2 of them discharged after 100 puffs. In short, they are only good for low wattage, they are not suitable for higher.

From the first charge, it didn't come close to the stated capacity, and within a month, the performance dropped sharply!

Very good and reliable. I was really very satisfied. In a single battery mode, I exceed one and a half days.

Excellent batteries for electronic cigarettes.
Quality and their cost is slightly below the average price.
If you can, just buy them!!!
They perform very well, as almost one covers me daily.
In the future, their performance may gradually decrease, as is the case with most.
They are worth the purchase down to the last €.

Use on an electronic cigarette...up to 20 watts that I have no problem with...and it lasts a long time! I don't know its durability for higher watts

I ordered 4 knowing that they are not any well-known brands as well as that I don't order any LG, Samsung, etc. monkeys.
They came in a very well-packaged box where each one is inside a plastic cylindrical case.
I put them to charge hoping that they are already charged...
They weren't, but that wasn't really a big deal.
The bad thing was that when the LitoKala charger showed that they are fully charged, on its screen the capacity of each battery was 1,740mAh, EXACTLY HALF of the stated 3,500mAh.

After a previous purchase of Samsung 18650 3500mAh and Panasonic 18650 3400mAh, I have also made a relevant comment. I decided to buy these because they have a discharge rating (continuous 11A and intermittent 20A for vaping). Their duration is definitely 2 days when used for an electronic cigarette (dual battery) at 45W - 0.25Ω and 13A, and 1 day for a mechanical single battery with 0.35Ω resistance and 12A, using dual SS wires. They are much better than the Samsung 18650 3500mAh, even though they have the same capacity, but I am somewhat more confident that I have not fallen for a fake product because they are not very well-known. The downside is that not many stores have them. I am commenting on the batteries because it is a painful story and surely we have all wasted money on wrong choices.