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Bench Retest Results: Aspire 4300mAh 26650...good performer, slightly exaggerated capacity

Discussion in 'Batteries and Chargers' started by Mooch, Jan 19, 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.

    83FDE135-9FFF-4901-AF34-0AFA6508BEB1.jpeg B602ECB6-20DA-4FA8-BA5F-7EE49EA43F9C.jpeg B80B5FE1-9AB3-4842-A15C-A0145E732918.jpeg 8475A3E4-83F3-4016-B04D-8236B37CCB8C.jpeg


    Bottom Line
    This Aspire cell uses the good performing Yong De Li New Energy Company YDL 26650D. Aspire owns (partially or fully) this company and they supply Aspire’s cells. This cell is rewrapped by other companies too.

    Aspire doesn’t put a current rating on the wrap. They supply a paper insert with each cell, that has the ratings on it, but in my opinion this can become a safety issue. If someone other than the original buyer uses this cell then they do not know its current rating.

    Aspire lists 20A continuous as “suitable” and 30A as “not suitable”. I am therefore giving it a 20A continuous rating. It could earn a higher rating but I will not give a cell a rating higher than the one given to it by the company that wraps it.

    Aspire also gives it a “vaping simulation” (10 sec discharge, 5 sec rest) rating of 40A. For any cell though I recommend staying under the continuous current rating to reduce risks, extend overall cell life, and improve performance.

    The capacity for the two cells I tested was 4185mAh and 4288mAh at 860mA (0.2C) down to 2.5V. This is terrible consistency but is typical for many China manufactured cells though and is below the claimed rating of 4300mAh. YDL rates this cell at 4200mAh minimum and 4300mAh typical but Aspire used the “typical” rating. Since I cannot have the lowest capacity cell in the batch, at 4185mAh, I am rating these cells at 4100mAh.

    I purchased these two cells for testing.


    Continuous Current Discharge Graphs
    7830B2BC-A768-4C56-A8AA-9EC1C7AB51A4.jpeg


    Ratings Graphic
    97D4D078-BD2C-4747-9A86-9C83B04B61A1.jpeg


    Performance Specs
    • DC Internal Resistance = 15.9mOhms*** (milliohms) average for the four cells.
    • Watt-hours (energy) delivered at 10A down to 3.2V = 12.9Wh
    • Watt-hours (energy) delivered at 20A down to 3.2V = 10.3Wh
    • 2-Sec Puff count at 30W = 774
    • 2-Sec Puff count at 60W = 309
    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.
     
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