I don't take advice form scam artists like ray that go around pitching docan and calling other companies scams mean while:
Hello! Having read here on this forum a lot of positive feedback about Docan Power decided to buy from them on Alibaba. Ordered 84pcs of Eve LF280K cells from Docan in January. Sales rep was Jenny Wu. Cells were sold as "brand new Grade A". I paid almost USD12K for them, USD141 per cell...
diysolarforum.com
and then makes videos saying a fake docan is selling counterfeit, swollen cells but the real docan isn't:
Hello! Having read here on this forum a lot of positive feedback about Docan Power decided to buy from them on Alibaba. Ordered 84pcs of Eve LF280K cells from Docan in January. Sales rep was Jenny Wu. Cells were sold as "brand new Grade A". I paid almost USD12K for them, USD141 per cell...
diysolarforum.com
To top it off he goes around calling legit sellers rip offs like luyuan as well:
https://diysolarforum.com/threads/r...ing-lifepo4-from-alibaba-is-misleading.45401/
so figures you would have a problem with 18650 and now sfk you just want the cheapest junk you can find and then complain about it it seems.
BTW I would not buy grade B from 18650 or any other seller for that matter, not worth the hassle.