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Bench Test Results: EHPRO Green-Black 3000mAh 40A 18650...a 15A cell, EHPRO says do not use!

Discussion in 'Batteries and Chargers' started by Mooch, Mar 5, 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 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.

    82BB4598-B704-4EE2-89A4-E9E83CA9C2EA.jpeg BA0A8284-E447-4633-9BD0-F151E250C0C5.jpeg AB4EC72D-223C-4EEA-B105-5807787D6793.jpeg BACB1D09-8B35-4418-A5A7-35D1D118A600.jpeg

    Bottom Line
    EHPRO markets this cell to vapers but their web site clearly states it’s not meant for use with e-cigarettes and that it is a serious misuse of the cell. We’ve seen retail vendors do this, it’s just a standard liability statement, but when the battery wrapping company does this with their own cells then is it done at our expense?

    What should we do when a company is willing to sell us something, pocket the profits, and then say not to use what we bought? If you didn’t buy direct from their web site you’d never know they say not to use with e-cigs. Just something to consider. This is different than what Sony and LG do as they do not market to vapers and they actively try to keep us from using their cells.

    Since EHPRO does not want anyone to use this cell with any vaping device I am giving it a Do Not Buy recommendation.

    There is no rating on this cell other than “40A MAX”. But if you go to the EHPRO web site it says it has a 32A continuous rating.

    No customer should have to go on a quest to hunt down the continuous rating of a cell they are using. Any “max”, “pulse”, or “max pulse” rating is useless as we don’t know the pulse length, time between pulses, and the criteria they used to set the rating (temperature? voltage sag? cycle life? A combination of those or other things?). We’re not able to compare this cell’s pulse rating to any other’s.

    Unfortunately, the 32A continuous rating is HUGELY exaggerated. This EHPRO appears and performs identically to the VTC6. Sony rates the VTC6 at 15A continuous. There is a non-continuous rating of 30A if you don’t let the VTC6 exceed 80°C but that will accelerate aging of the cell and is not recommended. The voltage sag will be huge too.

    I am rating this EHPRO at 15A and 3000mAh for any non-vaping use.

    Two cells were donated for the purposes of testing by EHPRO (Shenzhen EHPRO Battery Technology Co., LTD |). Thank you!

    Continuous Current Discharge Graphs

    Ratings Graphic

    EHPRO warnings against e-cigarette use
    6F4E7FA1-1DE8-455B-9AE7-8322E2225BDA.jpeg AE6DB8C9-7954-4328-B3AB-995F30732B67.jpeg

    To see how other cells have tested check out this link:
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