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Bench Test Results: Cylaid Purple 40A 3000mAh 18650...Samsung 30Q rewrap

Discussion in 'Batteries and Chargers' started by Mooch, May 24, 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.

    346C0026-F6CE-4075-86FB-613F3CB6264B.jpeg 66AEBAF5-E24F-422B-A7E1-5338BDC1E709.jpeg 7348092B-82D0-4723-9425-86E573292919.jpeg 2F140227-711F-4B14-A4B5-0F8C3507BADF.jpeg

    Bottom Line
    In my opinion this is a rewrap of the Samsung 30Q, appearing and performing identically to the Samsung.

    This Cylaid’s 25A continuous rating is exaggerated as Samsung rates the 30Q at 15A continuous. Operating at 20A is mentioned in the datasheet but you must not exceed its 75°C maximum temperature rating.

    This Cylaid’s 40A “pulse” rating is useless as we don’t know the width of the pulses, the time between them, and the criteria used to set the rating.

    I am estimating this cell’s ratings to be the same as Samsung’s ratings for the 30Q; 15A continuous, 20A if not allowed to reach 75°C, and 3000mAh.

    Two cells were purchased for the purposes of testing by me.

    Continuous Current Discharge Graph

    Ratings Graphic

    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
    • Like Like x 6
  2. sonicbomb

    sonicbomb Vaping Master Verified Member ECF Veteran

    Feb 17, 2015
    1187 Hundertwasser
    That looks like Efest purple
    • Agree Agree x 2
    • Like Like x 1
  3. Robin Becker

    Robin Becker Senior Member ECF Veteran

    Feb 3, 2018
  4. sonicbomb

    sonicbomb Vaping Master Verified Member ECF Veteran

    Feb 17, 2015
    1187 Hundertwasser
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