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Bench Test Results: Epoch 10A 5000mAh 21700...great performer, slightly overrated capacity

Discussion in 'Batteries and Chargers' started by Mooch, Aug 10, 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.

    0E9E5CDC-1F17-4915-9F45-17F57DCAC5F9.jpeg 1A7A700B-5B44-4C20-943D-ECBB6D613FF2.jpeg 5791B4CD-EA3B-4528-8529-2598DAFC76B1.jpeg 04A7D82E-8553-4EBA-A97D-E84BC1AB05CC.jpeg 3FCF8583-2EB3-42E8-995D-50B8D5F2D185.jpeg D15DF70A-A5F9-4B90-9F7E-58DCF8FCCAD9.jpeg


    Test Results
    Epoch is the house brand for 18650BatteryStore and this appears to be a rewrap of the great performing Samsung 50G, the best ultra-high capacity 21700 available right now. It outperforms the Samsung 50E2, 50E, and 48G.

    This cell’s 10A current rating is accurate in my opinion. The capacity of the two cells I tested was 4873mAh and 4909mAh. Since the two cells I have cannot be the lowest capacity ones in the batch I am rating this cell at 4800mAh.

    Two versions are available, flat top and button top. The button top version is about 73.0mm long.

    The white plastic top insulating ring is thick and should resist being damaged for a very long time. The Samsung 50G has a slightly recessed top contact though and this top ring recesses it even further. I was not able to charge these cells using an Opus BT-C3400 or Gyrfalcon All-88 charger. You will need devices and a charger with contacts that stick out a lot to use this battery.

    Two cells were donated for the purposes of testing by 18650BatteryStore (http://www.18650batterystore.con). Thank you!


    Continuous Current Discharge Graphs
    D0F95E3C-BD1B-42C3-91B7-8A40E767027B.jpeg


    Ratings and Performance Specs Graphic
    9FA212E3-F828-4389-8B85-F292B068F4BB.jpeg

    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
     
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