Bench Test Results: Samsung 26J (M3) - 5.2A 2600mAh 18650…average performer, low current rating

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Electron Wrangler
ECF Veteran
Verified Member
May 13, 2015
    These tests below only note my personal ESTIMATED ratings for the batteries I tested 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 property damage, personal injury, or even death. They are not supposed to be used outside of a fully protected battery pack and you use them at your own risk. Never exceed the battery’s true continuous current rating and keep the plastic wrap and top insulating ring in perfect condition.

    Testing batteries at their limits is dangerous and should never 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.

    46F55AF8-EAA8-4B90-9065-E43423026838.jpeg AAD66FA7-1AA1-4415-8CD6-776C0CF59059.jpeg D30C6BC7-A829-43AC-A8D6-F7D4166FB031.jpeg 4DE93C36-3691-4D9C-BB10-E8241CAE603B.jpeg 7FA180D9-2E90-4BEB-91F6-2C3FB82812F0.jpeg

    Test Results
    This is the third version of this average performing cell (“3” on the wrap), made at the Malaysia factory (“M” on the wrap), with a very low current rating. It is often salvaged from powerbank and low power devices and used to make other battery packs. It can also be used in fake cells.

    I have seen it used for vaping and other medium power applications but I recommend not using it at over 3A (10W) or so. Even if we ignore the increased safety risk of going over the 5.2A rating its high internal resistance causes a lot of voltage sag which shortens the run time. If you are using them in a low power application they could be available at a lower price than other cells.

    The two cells I tested delivered 2695mAh and 2727mAh. This is okay consistency but not great considering this is a Samsung cell. Both cells significantly exceeded their 2600mAh “nominal” capacity rating.

    Two cells were donated for testing by Vapcell (18650 batteries, Vapcell batteries, 18650 Chargers). Thank you!

    Continuous Current Discharge Graphs

    Ratings and Performance Specs Graphic

    I want to work for the 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 and device tests | Patreon.

    To see how other cells have tested check out this link: List of Battery Tests | E-Cigarette Forum
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