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Enook 40A 3100mAh 18650 Bench Test Results...just 20A and same as Enook 3000mAh battery?

Discussion in 'Batteries and Chargers' started by Mooch, Jan 26, 2017.

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  1. Mooch

    Mooch Electron Wrangler Verified Member ECF Veteran

    Supporting member
    May 13, 2015
    To prevent any confusion with the eGo-type "batteries", I use the term "cell" here to refer to a single 18350, 18650, 26650, etc.

    While the test results are hard data, the conclusions and recommendations I make based on these tests are only my personal opinion based on my criteria for setting a rating. Carefully research any cell you are considering using before purchasing.

    Testing cells at their limits is dangerous and should never, ever, be attempted by anyone who has not thoroughly studied the dangers involved and how to minimize them.

    If the cell has only one current rating number on it, or if it says "max discharging current" then I have to assume that the company is stating that the cell can be discharged at that current level in any way, including continuously.

    image.jpeg image.jpeg image.jpeg image.jpeg

    Bottom Line
    This cell has an absurdly exaggerated current rating and an exaggerated capacity rating. Its appearance is identical (except as noted below) to the LG HG2 but this Enook has a higher internal resistance and performs worse. Like the 3000mAh Enook this cell seems to be a rewrapped lower grade HG2 except that the center of the bottom of this cell is polished. I cannot explain why. I've never seen that before on any other cell.

    As shown in the discharge graph below it performs almost identically to the 3000mAh Enook but worse than the 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.

    Continuous-Current Comparison to the 3000mAh Enook and HG2

    Pulse-Current Test Results
    No pulse tests were done as this is an HG2.

    • At 10A and 20A continuous you can see the effect of this cell's higher internal resistance versus a standard A Grade HG2. The Enook's voltage is lower and this results in less vaping time before a low voltage cutoff is reached.
    • I am setting a CDR of 20A for this cell. While operating any cell near its rated maximum current level causes damage, I would expect ok cycle life at 20A continuous.
    To see how other cells have tested and how hard you can safely push them, check out these links:
    List of Battery Tests | E-Cigarette Forum
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