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Orbtronic SX22 22A 2000mAh 18650 Bench Test Results...a 22A battery, may be a 30Q

Discussion in 'Batteries and Chargers' started by Mooch, Aug 10, 2015.

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  1. Mooch

    Mooch Electron Wrangler Verified Member ECF Veteran

    Supporting member
    May 13, 2015
    Tested at 10A-30A constant current. This cell was purchased by a friend from IMRBatteries and donated for testing. To prevent any confusion with the eGo-type "batteries", I use the term "cell" here to refer to a single 18650, 26650, etc.


    Disclaimer
    The conclusions and recommendations I make based on these tests are only my personal opinion. Carefully research any battery you are considering using before purchasing.

    Testing batteries 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. My safety precautions are the ones I have selected to take and you should not assume they will protect you if you attempt to do any testing. Do the research and create your own testing methods and safety precautions.

    image.jpg image.jpg image.jpg image.jpg

    See the Samsung 30Q photos below for comparison....

    image.jpg image.jpg image.jpg image.jpg

    Bottom Line
    This is so-so 22A continuous discharge current (CDR) cell that runs hot. Its can, markings, and top are identical to the Samsung 30Q but its performance is much poorer than the 30Q.


    Test Results
    image.jpg


    Comments
    • At 10A the discharge reached about 1900mAh. This is decent capacity for a 2000mAh-rated cell.
    • At 20A the cell had a high maximum temperature of 78°C. This is low-to-average for a 20A CDR cell.
    • At 22A the cell reached 83°C. This is high for a cell at its CDR but other cells like the LG HG2 operate at the same temperature at their CDR.
    • At 25A the cell reached a max temperature of 87°C. This is too high a temperature to set the CDR at this level.
    • At 30A the cell reached 93°C, a very high temperature but still under my safety limit of 100°C.
    • An additional five cycles at 22A showed no signs of damage other than that expected from running a cell near its CDR for several cycles.
    • I am setting a CDR of 22A for this cell. I think you will get decent cycle life at 22A due to it operating at the same temperature as the 30Q and HG2 at their CDR. In my opinion you should not run this cell at above 25A.
    • I think this might be a rewrapped lower-grade Samsung 30Q. The top, bottom, can, and markings are identical to the 30Q. The performance of this cell is significantly worse than the 30Q though, both in voltage-under-load and capacity. The genuine 30Q is the only cell I've seen with that particular stamp on the bottom. The max temperatures of the SX22 are lower than the 30Q but that's only because the run time of the SX22 is so much shorter than the 30Q. There's a lot less time for the temperature to continue rising.
    • To see how other batteries have tested and how hard you can safely push them, check out the links in my signature.
     
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