Bench Test Results: Samsung 15L 18A 1500mAh 18650...underrated but not a great performer

Discussion in 'Batteries and Chargers' started by Mooch, Jul 24, 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 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.

    IMG_5599.JPG IMG_5600.JPG IMG_5601.JPG IMG_5602.JPG


    Bottom Line
    While this cell has a 18A continuous rating from Samsung it is, like most Samsung cells, underrated and it runs cool enough to earn a 25A continuous rating. But, the voltage sag is severe at that current level so the rating drops to 20A.

    Considering the other great cells we can choose from with much higher capacity ratings at 20A continuous this Samsung just isn’t very useful for us.

    I am rating this Samsung 15L at 20A and 1500mAh. Its maximum vaping amps (MVA) rating is 25A, limited by voltage sag.

    The two cells that were tested were purchased by me from IMRBatteries.


    Continuous-Current Test Results
    IMG_5608.jpg


    Pulse-Current Test Results
    IMG_5609.jpg IMG_5610.jpg


    Always Remember
    ⁃ There is no 18650 with a factory/manufacturer rating over 30A continuous.
    - There is no 3000mAh 18650 that can have a rating over 20A continuous.
    ⁃ There is no 3100mAh-3600mAh 18650 that can have a rating over 10A continuous.
    ⁃ There is no 18650 available to vapers that has a capacity rating over 3600mAh.


    Comments
    • At 10A continuous this cell delivered 1414mAh. This is good performance for a 1500mAh rated cell so I am rating it at 1500mAh.
    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
     
    sonicbomb, Rossum, KenD and 3 others like this.

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