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Bench Test Results: EBAT 40A 3200mAh 20700...only 30A/3100mAh but bit better than 5-leg 20700’s

Discussion in 'Batteries and Chargers' started by Mooch, Apr 15, 2018.

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  1. Mooch

    Mooch Electron Wrangler Verified Member ECF Veteran

    Supporting member
    May 13, 2015
    These tests below only note the estimated ratings for these batteries at the time I tested them. Any battery that is not a genuine Samsung, Sony, LG, Panasonic, or Sanyo can change at any time! This is one of the hazards of using “rewrapped” or batteries from other manufacturers so carefully research any battery you are considering using before purchasing.

    Misusing or mishandling lithium-ion batteries can pose a SERIOUS RISK of personal injury or property damage. They are not meant to be used outside of a protected battery pack. Never exceed the battery’s continuous current rating and keep the plastic wrap and top insulating ring in perfect condition.

    Testing batteries at their limits is dangerous and should never, ever, be attempted by anyone who has not thoroughly studied the dangers involved, understands the risks, has the proper equipment, and takes all appropriate safety precautions.

    If the battery has only one current rating number, or if it only says "max", then I have to assume the battery is rated at that current level for any type of discharge, including continuous.

    41409193-5B19-421F-893C-EBABAF30E25F.jpeg CC1E6D5B-4E6D-4D43-B468-E0D363DF35DB.jpeg C098764F-123C-49AE-BD0F-BF6D72903948.jpeg 9DDD2FC2-3B88-4CFF-A822-7A500E46A018.jpeg 06456AD8-4979-4BFE-B3BF-4FDFA460BB68.jpeg


    Bottom Line
    This cell is a good performer, outperforming the VTC5A and it’s a bit better than the 5-“leg” top contact cells wrapped by iJoy, Efest, Ampking, etc.

    It is rated at 40A where the Wh and capacity specs are on the wrap but the 30A continuous current rating is mentioned on another part of the wrap. Why do this? The 40A rating is undefined and useless.

    I could find no mention of this cell on EBAT’s web site or on Facebook.

    This cell roughly matches the Sanyo NCR20700A at 10A but the Sanyo is still the better performer at high current levels. This EBAT appears to be the same cell as the Vapcell gold 30A 3100mAh but it doesn’t perform quite as well as the Vapcell version.

    I am rating this EBAT at 30A and 3100mAh.

    I do not know who has this cell in stock or when anyone will be stocking it. Please check with your favorite vendors or EBAT.

    Two cells were donated for the purposes of testing by EBAT (www.ebatpower.com). Thank you!


    Continuous Current Discharge Graphs
    9FD79831-B084-4BE3-851D-F647D5F4F08B.jpeg 2E570CAD-2D47-458E-A004-7E616248ADEB.jpeg


    Ratings Graphic
    D5F9ABC7-7F0F-4338-96D1-5765DA3AA5A1.jpeg


    Performance Specs
    • DC Internal Resistance = 15.7mOhms (milliohms) average for the two cells.
    • Total energy delivered down to 3.2V at 10A continuous = 8.8Wh (Watt-hours) average
    • Total energy delivered down to 3.2V at 20A continuous = 7.1Wh (Watt-hours) average
    • Total energy delivered down to 3.2V at 30A continuous = 4.6Wh (Watt-hours) average

    Comments
    • EBAT paid a fee to be moved to the front of the testing queue, which currently has a 10-12 week backlog. This cannot influence my test results as they pay in advance, have no say about what is in this report, and I don’t care if any company never does this or donates batteries again. My reputation is a lot more important than any battery donation or payment.
    • To see how other cells have tested check out this link: https://www.e-cigarette-forum.com/forum/blog-entry/list-of-battery-tests.7436/
     
    • Like Like x 3
    • Informative Informative x 2

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