Bottom Line: This is a poor performing cell with an exaggerated current rating. When discharged continuously at its claimed 40A rating (down to 3.2V) it only delivered 14mAh. Yes, only 14mAh.
Its appearance is identical to the LG HG2 but the Enook has a higher internal resistance and performs worse. It seems to be a rewrapped lower grade HG2.
I am rating this Enook at 20A and 3000mAh but it sags more than the HG2, delivering about 10% less capacity. The 18650 ratings table has been updated to include this cell.
Test results, discharge graph, photos: https://www.e-cigarette-forum.com/forum/threads/enook-40a-3000mah-18650-bench-test-results-laughably-overrated-a-lower-grade-20a-battery.785759/#post-19114897
All my test results to date: https://www.e-cigarette-forum.com/forum/blog-entry/list-of-battery-tests.7436/
18650 current ratings and safety grades: https://www.e-cigarette-forum.com/forum/blog-entry/18650-safety-grades-picking-a-safe-battery-to-vape-with.7447
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