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Bench Test Results: Brillipower Green 2600mAh 40A 18650...absurdly overrated, low grade, not IMR

Discussion in 'Batteries and Chargers' started by Mooch, Sep 3, 2017.

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  1. Mooch

    Mooch Electron Wrangler Verified Member ECF Veteran

    Supporting member
    May 13, 2015
    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 only says "max" 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.

    Cell photos: https://imgur (dot) com/a/TaHiF
    (Sorry for the split link but direct links to Imgur do not display properly)


    Bottom Line
    This cell has “40A max” on the wrap, which is an absurd overrating. Its appearance is identical to the Samsung 25R5 but this Brillipower doesn’t perform as well. It appears to be a lower grade 25R5.

    It has an exaggerated capacity rating of 2600mAh on the wrap. This is only a 2500mAh cell.

    The wrap has “IMR18650” on it but this cell does not use the chemistry associated with the IMR model number prefix. It uses the chemistry sometimes indicated by the INR prefix.

    I am rating this Brillipower cell at 20A and 2500mAh. Its maximum vaping amps (MVA) limit is 25A, limited by temperature and voltage sag. With all the other cells that are available to us this one is a terrible choice and earns a Do Not Buy recommendation from me.

    The two cells that were tested were purchased for that purpose by me.


    Continuous-Current Test Results
    Brillipower Green 40A 2600mAh 18650 CC Tests.jpg


    Comparison Against the 25R5
    Brillipower Green 40A 2600mAh 18650 vs 25R Comparison.jpg


    Pulse-Current Test Results
    Pulse testing was not done as this is a rewrapped 25R5.

    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
     
    puffon, Rossum, KenD and 4 others like this.
  2. Tonee N

    Tonee N Ultra Member Verified Member

    Mar 24, 2017
    Nevada
    I had seen those for sale a few times but never bought them.
    Another great catch Mooch, thank you.

    Sent from my SAMSUNG-SM-G891A using Tapatalk
     
    Mooch likes this.

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