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Bench Test Results: Avatar Controls 30A 4000mAh 21700...overrated, seems same as Basen and CoilArt

Discussion in 'Batteries and Chargers' started by Mooch, Jan 17, 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.

    18F1B8D4-739F-4159-878B-311892356D0C.jpeg 781C6663-4CD0-414D-A2FE-DB7872B9C037.jpeg 2DD007C2-FB8C-4375-983C-8F987334273E.jpeg 9453A069-8BA3-4A85-83E0-13FBC0BC2564.jpeg


    Bottom Line
    This cell is identical in appearance to the CoilArt 40A 4000mAh and Basen 30A 4000mAh cells. It performs the same as the Basens I tested but better than the two CoilArt cells I tested.

    This Avatar reached the boiling point of water when discharged at its 30A claimed rating. I am giving it an estimated current rating of 20A, the same as the Basen and CoilArt cells.

    It delivered 3963mAh and 3997mAh of capacity at 0.5A. Since the capacity rating should be lower than what any cell deliver in testing I am giving it a rating of 3900mAh.

    Two cells were donated for the purposes of testing by Anthony Vapes (overview for Anthony_Vapes). Thank you!


    Continuous Current Discharge Graphs
    3247B8DE-0DEE-44B7-8C41-BC850766B59E.jpeg 839B574B-3C40-4FE0-8767-E75BC91324CC.jpeg 80E93C44-F8A9-40BA-9EC1-5D246F6CC803.jpeg


    Ratings Graphic
    12D0973C-1114-44AC-8A0F-2E078377AA5E.jpeg


    Performance Specs
    • DC Internal Resistance = 22.2mOhms (milliohms) average for the two cells.
    • Total energy delivered down to 3.2V at 10A continuous = 11.8Wh (Watt-hours) average
    • Total energy delivered down to 3.2V at 20A continuous = 6.7Wh (Watt-hours) average

    Comments
    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/
     
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  2. Barkuti

    Barkuti Senior Member ECF Veteran

    Interesting, its minimum capacity nearly matches the advertised figure.
    LiitoKala has recently launched a new cell rewrap, the Lii-40A:

    [​IMG]
    The specifications are a freakin' mess, it says “30A power 5C Rate Discharge”, then “15A power 5C Discharge” then below it “Discharge: 40A Max Continuous”. And then you can see the picture: 15A. Whoever is in charge of sketching the pictures probably knows better and is surely wiser LoL! :lol:

    Since I believe right now just one or two chinese OEMs may be producing these cells, it could be that this Lii-40A one comes from the same factories as this Avatar Controls. Its AliExpress price is awesome.

    Cheers :)
     
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  3. ch2856

    ch2856 Full Member

    Aug 4, 2013
    Israel
    It's a typical Chinese <H1> catch them all title:
    looking for 21700 - I got it
    looking for 21700 40A - I got it
    looking for 21700 30A - I got it
    looking for 21700 20A (5C) - I got it
    looking for 21700 15A - I got it
    ...

    Any way, 20A and 3900mAh, not so bad.
     
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  4. Mooch

    Mooch Electron Wrangler Verified Member ECF Veteran

    Supporting member
    May 13, 2015
    There is just no way to even guess what cells they might be with all the exaggerated and outright incorrect info around. Direct testing and cell examination is the only way we can begin to understand what might be going on. Frustrating, but it’s what we’ve got.
     
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  5. benley73

    benley73 Ultra Member ECF Veteran

    May 2, 2016
    What the exact size of thrse some 21700 cells are nearly 22700 in sixe ranging from 21mm 21.4mm
    To 21.6mm in sizes , is it possible to mention size since not sla fit in mods or tubes
     
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  6. Mooch

    Mooch Electron Wrangler Verified Member ECF Veteran

    Supporting member
    May 13, 2015
    Good idea. Will try to do.
     
  7. benley73

    benley73 Ultra Member ECF Veteran

    May 2, 2016
    Thanks Sorry phone kept changing words as i types so looks a little dislexit writing

    Sent from my ONEPLUS A3003 using Tapatalk
     

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