Sanyo NCR18650GA 10A 3300mAh 18650 Bench Retest Results...a great 12A battery

Discussion in 'Batteries and Chargers' started by Mooch, Nov 15, 2016.

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  1. Mooch

    Mooch Electron Wrangler Verified Member ECF Veteran

    Supporting member
    May 13, 2015
    The two cells tested were purchased with funds donated by the vaping community for the purposes of testing. Thank you! 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.

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    Bottom Line
    This is great performing 10A 3300mAh-rated battery. I am rating at 12A because its temperature is low enough and its voltage is higher than other 10A batteries. I do not recommend using it over 42W/12A to minimize voltage sag. My maximum vaping amps (MVA) rating is 15A. This is due to the large battery voltage sag and not high temperatures. The 18650 ratings table has been updated to include this cell.

    Panasonic bought Sanyo's battery business a few years ago so you can also find this cell being sold as a Panasonic.

    Continuous-Current Test Results
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    Pulse-Current Test Results
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    Comments
    • At 5A continuous it reached 3159mAh. This is good performance for a 3300mAh high internal resistance cell at 5A so I am rating it at 3000mAh.
    • At 10A continuous the temperature rose to 60°C. This is below the average temperature of a cell operating at its continuous discharge rating (CDR) and lower than other high internal resistance cells. This is an indication that we are operating below its true rating.
    • At 15A continuous the temperature rose to 77°C, just below the average temperature of a cell operating at its CDR. But the voltage is sagging a lot, an indication that we are operating at above its true rating.
    • At 20A continuous the voltage very quickly dropped to 3.2V and the battery got dangerously hot, 113°C.
    • I am setting a CDR of 12A for this cell. While operating any cell near its rated maximum current level causes damage to the cell, I would expect good cycle life from this cell at 12A 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
    https://www.e-cigarette-forum.com/f...afety-grades-and-pulse-performance-data.7566/
    https://www.e-cigarette-forum.com/f...des-picking-a-safe-battery-to-vape-with.7447/
    https://www.e-cigarette-forum.com/f...fety-grades-and-pulse-performance-data.7554//
     
    MikeyConti, sonicbomb and KenD like this.
  2. Mooch

    Mooch Electron Wrangler Verified Member ECF Veteran

    Supporting member
    May 13, 2015
    The first comment has an error. It should read...

    "At 5A continuous it reached 3159mAh. This is good performance for a 3300mAh high internal resistance cell at 5A so I am rating it at 3300mAh."
     
    KenD likes this.

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