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Bench Test Results: Vapcell Purple 5-Leg Top 30A 3000mAh 20700...same as other 5-leg 20700’s

Discussion in 'Batteries and Chargers' started by Mooch, Feb 20, 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.

    4882C70E-F1B5-49F3-AECD-41B3EDE164DD.jpeg 9C543C59-C1BF-4ECA-AB9B-F922DAD92D6D.jpeg FD8CDCC4-4842-4F7A-B04C-634EB6BA4910.jpeg A8163F21-004E-4402-B05B-49C8FA084A37.jpeg


    Bottom Line
    This Vapcell is identical in appearance and performance to the other 5-“leg” top contact 3000mAh 20700’s that I have tested from Ampking, Efest, EBAT, Keeppower, EnerCig, and iJoy.

    Vapcell clearly marks this cell with an accurate continuous current rating, which is fantastic and should be done by every company.

    But, as the other 5-leg cells have done, this Vapcell is overrated in capacity. It delivered 2916mAh and 2929mAh for the two cells I tested. I am rating this cell at 30A and 2900mAh. This is very frustrating considering the accurate current rating. There’s just no need for this exaggerated capacity rating.

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


    Continuous Current Discharge Graphs
    E49D955A-F7DF-4167-B5ED-0A224E9C6F47.jpeg 22D3BFE2-611F-4B25-8FFF-4BB376E44C84.jpeg


    Comparison to other 5-leg 20700’s
    3920BBDD-CD17-4E19-BF0C-9FEE4F70D4B7.jpeg


    Ratings Graphic
    D8F6EED4-0D24-4257-AEC7-FB36CD398735.jpeg


    Performance Specs
    • DC Internal Resistance = 19.5mOhms (milliohms) average for the two cells.
    • Total energy delivered down to 3.2V at 10A continuous = 8.7Wh (Watt-hours) average
    • Total energy delivered down to 3.2V at 20A continuous = 6.7Wh (Watt-hours) average
    • Total energy delivered down to 3.2V at 30A continuous = 3.9Wh (Watt-hours) average

    To see how other cells have tested check out this link: https://www.e-cigarette-forum.com/forum/blog-entry/list-of-battery-tests.7436/
     
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