I've had a couple AliExpress orders whose shipments were cancelled; this usually gets noticed in the order details page or the tracking information page a few days after the initial waiting for pickup notice.
Paying a minimum of attention to shipments' tracking information is a nice idea because, in my experience, sellers do not seem to report their cancelled shipments to users.
The 9900 mAh 18650’s at $1/piece, are obviously a hoax.
But what about 4000 mAh 18650? Is that possible?
I’m looking for a few extra 18650’s, I currently use the black 3500 mAh Liikota cells, which were tested as very good by HJK on this forum. And yes I like them, but I’m always on the look for something better.
“Hello, because your package was returned as undeliverable, give you change the other logistics today sent to you, in the 17th website can query. This is the new tracking number:”
This cell would hit 3.4+Ah minimum down to 2.5V at 0.5A - 1A, even without the protection circuit burden (≈40mV at 1A), maybe 3.5Ah at 0.5A, but 0.5A is below the 0.2C official discharge current rating. Totally l00ks like a rewrapped Sanyo NCR18650GA (go check it out with the battery comparator).
I would no doubt open a dispute. I'd recommend choosing “product is not as described” or “counterfeit goods”. If you choose counterfeit goods and the seller doesn't cooperate you'll have to convince the AliExpress Case Management Team with proper evidence, at least like photo-comparing the cells with known good 30Q samples.