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Bench Test Results: Vapcell Black 30A 4000mAh 21700 without QR code...3900mAh, Sony VTC6A rewrap

Discussion in 'Batteries and Chargers' started by Mooch, Aug 8, 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.

    E8C1600C-9798-402D-8799-727E2B0C4A55.jpeg 74AB2B2D-2169-4269-889E-25957B66EE27.jpeg 409CE96D-F09E-47AE-AE50-DB2051E8C95A.jpeg DDAF71C2-CF1E-4070-873A-7B7267B30EB1.jpeg

    Bottom Line
    This is an almost accurately rated rewrap of the 21700 size version of the Sony VTC6A but it does not have the QR code on the bottom of the metal can. It performed a bit worse than the VTC6A (with the code) and Vapcell VTC6A rewrap (with the code) I recently tested. I don’t think anyone will notice the difference though as it is small.

    Since the VTC6A samples I played with earlier this year did not have the QR code on the bottom perhaps there is still a mix of older and newer VTC6A cells in Vapcell’s inventory? This is just a guess though.

    The Samsung 40T delivers a tiny bit more energy, Wh, at high current levels but the VTC6A runs a tiny bit cooler. Basically, they perform the same and are a fantastic choice for use at up to 20A-25A, in regulated or unregulated devices. At above 20A-25A the Samsung 30T is the better choice though due to its higher current rating and better efficiency (lower internal resistance).

    The two cells I tested delivered 3944mAh and 3974mAh at 800mA (0.2C) down to 2.5V.

    I do not have the datasheet for this cell or the Sony VTC6A. I am ESTIMATING this Vapcell’s ratings to be 30A continuous and 3900mAh.

    Two cells were donated for the purposes of testing by Vapcell (Vapcell batteries, chargers, vape batteries). Thank you!

    Continuous Current Discharge Graphs

    Ratings Graphic

    Performance Specs
    - DC Internal Resistance = 13.8mOhms (milliohms) average for the two cells.
    - Total energy delivered down to 3.2V at 10A continuous = 10.7Wh (Watt-hours) average
    - Total energy delivered down to 3.2V at 20A continuous = 9.7Wh (Watt-hours) average
    - Total energy delivered down to 3.2V at 30A continuous = 8.1Wh (Watt-hours) average

    I want to work for the vaping community full time! If you feel what I do is worth a couple dollars a month and you would like early access to battery availability and testing news and a say in what I test then please consider becoming a patron and supporting my testing efforts: Battery Mooch is creating battery tests and educating vapers | Patreon.

    To see how other cells have tested check out this link: List of Battery Tests | E-Cigarette Forum
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