This Eizfan cell is identical in appearance in performance to the 15A Sanyo NCR20700B.
This cell has a truly ridiculous current rating of 30A and has an overrated capacity rating too. There is no reason to buy this cell if you have access to the Sanyo NCR20700B.
I am rating this Eizfan at 15A and 4000mAh.
Two cells were purchased by me for the purposes of testing.
Cell photos: https://imgur.com/a/S63Wv
Ratings graphic: https://imgur.com/a/MFjVk
Test results, discharge graph, photos: https://www.e-cigarette-forum.com/threads/bench-test-results-eizfan-30a-4300mah-20700…obscenely-overrated-just-a-sanyo-ncr20700b.837877/
All my test results to date: https://www.e-cigarette-forum.com/forum/blog-entry/list-of-battery-tests.7436/