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Bench Test Results: Vapcell 20A 5000mAh 26650...decent performer for up to 10A/30W

Discussion in 'Batteries and Chargers' started by Mooch, Jan 25, 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.

    A850CAE8-9736-476A-9631-4A109B202EA2.jpeg E4EDAB6A-13A5-4841-B399-48DE20ECD8A2.jpeg 1E1FD37A-6872-4068-ADAC-AD693B10AD2B.jpeg 5A34F7C1-A971-4EA8-A7C5-747B47189CAF.jpeg


    Bottom Line
    This is a decent performing cell that will give you more vaping time than the 4200mAh-4300mAh 26650’s if you are at around 10A/30W or lower. This cell might have a 20A rating (about 60W) but at power levels over 30W or so this cell’s higher internal resistance leads to greater voltage sag. That means less vaping time before the voltage drops too low.

    For example, this cell delivered an average of 834 two-second puffs at 30W compared to the (roughly) 770 puffs delivered by the cells that wrap the 4200mAh YDL 26650D. But at 60W this Vapcell only delivered 210 puffs versus the over 300 puffs delivered by the YDL-based cells like the Golisi, Aspire, and Vapcell 26650’s.

    Note: This performance comparison does NOT include the poor performing, and preposterously overrated, Efest 35A/50A 4200mAh 26650.

    The capacity for the two Vapcells I tested was 4961mAh and 4998mAh at 1000mA (0.2C) down to 2.5V. This is good consistency for a China manufactured cell but these cells did not meet their 5000mAh rating. I am rating this cell at 4900mAh.

    Yes, the one cell tested at so close to 5000mAh that it essentially met its rating but the other did not. I feel any capacity rating should be a guaranteed minimum, not a “typical” or “nominal” rating. A cell rated at 5000mAh should deliver, on average, at least 5100mAh so that any cells that are not quite up to the capacity of the others in that batch can still meet their 5000mAh rating.

    Two cells were purchased for testing by me.


    Continuous Current Discharge Graphs
    CBDB9F43-B1D6-4826-8EDE-D1D7F50BC48E.jpeg


    Ratings Graphic
    D15E137B-0CAB-4F35-88A5-68FFF7C72E56.jpeg


    Performance Specs
    • DC Internal Resistance = 21.5mOhms*** (milliohms) average for the two cells.
    • Watt-hours (energy) delivered at 10A down to 3.2V = 13.9Wh
    • Watt-hours (energy) delivered at 20A down to 3.2V = 7.0Wh
    • 2-sec puff count at 30W = 834
    • 2-sec puff count at 60W = 210
    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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