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Bench Test Results: Basen Gold 25A/50A 2400mAh 18650...overrated junk, DO NOT BUY

Discussion in 'Batteries and Chargers' started by Mooch, Nov 12, 2019.

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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.

    556E4E03-92A4-477F-91FA-31708E24D972.jpeg 372DC228-0A7D-47B4-AB3B-F9CDD463D4BA.jpeg 3BC1B629-8DDF-4AB3-A821-97ECEFC5EF2B.jpeg 95C1EA99-1466-453A-8D82-6BEBEF07FB7F.jpeg 427313E7-C1D4-486C-AAD8-DCA5A3E79AD9.jpeg

    Bottom Line
    This is an absurdly overrated cell that also has a useless “max” rating, earning it entry into my Battery Hall of Shame.

    This is a very popular cell in Asia and there are people who will say I am wrong. Prove it then, post your data. Tell us how you tested these cells and how you measured their capacity, voltages, and temperatures. Let us know what equipment you used and how you determined that the capacity rating is actually 2400mAh and that the current ratings are 25A continuous and 50A “max”. Just saying I am wrong, or that I am unfair, or that “you stand by” the products you sell or wrap doesn’t prove anything.

    At its claimed 25A rating both of the cells I tested delivered only about 116mAh down to 3.2V, a typical cutoff point. In comparison, the Sony/Murata VTC5A delivered 1257mAh. That is over ten times more capacity from the VTC5A! This Basen obviously has a true current rating much, MUCH lower than 25A.

    This cell’s 50A “max” rating is useless. There are no standards for setting a “max” rating and we don’t know how Basen set it. Without that information we can’t use this “max” rating to compare this cell to another. It’s useless.

    When this cell is discharged at 50A the voltage drops below the 3.2V point almost instantly. As I said, useless.

    The capacities for the two cells I tested were 2055mAh and 2104mAh at 480mA (0.2C) down to 2.5V. This is far below the claimed 2400mAh rating for this cell. I am rating these cells at 2000mAh.

    These cells perform like crap for their claimed 25A rating. I don’t know what these cells are and I don’t really care since they are such junk. I am giving these cells a current rating of 10A and I feel that is generous.

    I recommend not buying this battery. There are some great batteries with true 25A ratings you can buy instead. The Molicel P26A and the Sony/Murata VTC5D and VTC5A are three examples.

    I verified the authenticity of both cells at Basen’s web site via the numbers on the scratch-off stickers on the cells.

    143D8452-1055-4560-AA7A-3B1A4E4298B4.jpeg 5A7886B6-A6E3-4FDB-AB34-BBEF211E041D.jpeg

    Two cells were brought to NYC and sold to me by a shop located in the Philippines, Okims Playground (OKIMS Playground). Thank you! I really appreciate you making it possible for me to expose this kind of ridiculous overrating.

    Continuous Current Discharge Graphs
    A240ACD7-7F6D-41D3-B7CD-0EA1B2FD389F.jpeg 42DC5FE5-C36F-4A1B-BD66-99F0BEB22687.jpeg

    Ratings Graphic

    Performance Specs
    • DC Internal Resistance = 23.7mOhms*** (milliohms) average for the two cells.
    • Watt-hours (energy) delivered at 10A down to 3.2V = 4.0Wh
    • Watt-hours (energy) delivered at 20A down to 3.2V = 0.7Wh
    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

    ***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.
    • Like Like x 3
    • Informative Informative x 2
  2. Zaryk

    Zaryk Ultra Member Verified Member ECF Veteran

    Jan 25, 2018
    Thanks Mooch. Your work is very much appreciated, and exposing these kind of lies is very valuable to the vaping community. Good job!
    • Like Like x 1
  3. mimöschen

    mimöschen Ultra Member ECF Veteran

    Jul 15, 2016
    Seems like a very safe to use cell for high power vaping though, because it never reaches critical temperatures.
    You just have to carry enough spares to swap them out every other puff.:thumbs:
    • Funny Funny x 1
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