Well as I said the cells reviewed by HKJ test well, unlike some Chinese cells.
Some experience of the 21700 provided by Convoy:
Got my first 21700 flashlight, a Convoy S21A, and it came with a LiitoKala 5000mAh battery. Is this good? What are considered the best 21700?
There’s reviews of my Convory M21F with the supplied Liitokala 21700 5000 mAh cells showing good performance.


Convoy M21F – Selfbuilt's Flashlight Reviews.ca
Some older comments:
Agreed Tom E but even the “new” version Liitokala 26650, if that is what you receive, is still genuine 5,000ma capacity & only a couple of hundred less ma max amp drain. They are still the best performing 26650 out there & better performing & much cheaper than Keeppower, Basen etc. I have all 3 brands I have mentioned. FWIW the cells in the GB 4 x 26650 pic has the original serial number (ending with an A & not a B) although it could just be that GB has not updated it”s pics. iirc the same t…
Im guessing many of you have this light, ive got these incoming: Amazon.com I would like another pair, can you recommend? Thanks!
There been some reports of fake Liitokala cells doing the rounds. Some Chinese brands, Catchfire, Bonfire etc, are awful.