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Bench Test Results: Vapcell K30 – 15A 3000mAh 18650...average performer, ignore the “max” rating

Discussion in 'Batteries and Chargers' started by Mooch, May 10, 2020.

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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, Murata, LG, Panasonic, Molicel, 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 physically and electrically protected battery pack. Never exceed the battery’s current rating and keep the plastic wrap and top insulating ring in perfect condition. Use of any of these batteries is AT YOUR OWN RISK.

    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.

    Cell photos
    0C16203A-4CA9-4E3C-9379-E69186FD7DCE.jpeg 0EED1F96-8A0F-4AFF-BADF-B60C05A467BE.jpeg 32D34A23-C3F4-42EE-A9EC-242F18B66524.jpeg 7358C35B-4CF1-4809-A4B2-3B4DAEBE0419.jpeg

    Test Results
    The Vapcell K30 is an average performing 3000mAh cell. It is outperformed by the Samsung 30Q, Sony/Murata VTC6, and LG HG2. Even the 20A 2500mAh Vapcell K25 runs for a bit longer at 10A. These appear to be China-manufactured cells and the 15A rating seems reasonable.

    The 30A “max“ rating on the wrap cannot be used to compare these cells to any others. While Vapcell says they have done some testing the max rating was also set based on marketing needs.

    The capacity of the two cells I tested was 2962mAh and 2991mAh. While this is decent consistency for China-manufactured cells they failed to meet their 3000mAh rating. The cells I have cannot be the lowest capacity cells in the batch either. I am rating the K30 at 2900mAh.

    Two cells were sent for the purposes of testing by Vapcell ( Thank you!

    Continuous Current Discharge Graphs
    32876CFC-C036-41EC-9C1C-A64C4BDC9894.jpeg F798938D-EFEC-45F8-8261-4B733006DD20.jpeg

    Ratings Graphic

    Performance Specs
    • DC Internal Resistance = 21.6*** (milliohms) average for the two cells.
    • Watt-hours (energy) delivered at 30W (10A) down to 3.2V = 6.6Wh
    • 2-sec puff count at 30W (10A) = 396
    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, battery and charger testing and 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

    A fee was paid for rush testing of these cells. This can not possibly change the results of my testing or my conclusions.

    ***I have switched test jigs, resulting in slightly lower IR readings versus my previous setup. Add 1.6mOhms to this IR value in order to compare these cells to others tested previously.
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