Bench Test Results: BAK N18650CK - 6.1A 3050mAh 18650…low cost, average performer

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Mooch

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  • May 13, 2015
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    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.

    C2FD3E21-288C-4639-B277-16A449F4AE5F.jpeg 88FC2D9E-6DF9-4538-9058-946124F49A8E.jpeg D2191106-904E-43F0-B47D-AE2F51BC3C62.jpeg 6DD93E0D-4237-482C-934C-93B76291196C.jpeg 2EDE57C2-BFA7-4970-B031-16BAAA2BAFC5.jpeg


    Test Results
    This cell is an average performer but is available at a low price. It could be a good choice for large packs and cost-sensitive applications where high temperatures are not present. At 5A this cell performs almost as well as the EVE 29V but not as well as the EVE33V, Molicel M35A, and Panasonic NCR18650GA.

    This cell is rated at up to 6.1A if not allowed to get warmer than 45°C. You can go up to 3.05A if the cell is being used at 45°C-60°C.

    The two cells I tested delivered 3102mAh and 3116mAh, exceeding their “typical” capacity spec of 3050mAh. This is good consistency for a China-manufactured cell.

    Two cells were purchased for testing by me from 18650BatteryStore (18650 Battery Store - Lithium Ion Batteries, Chargers and Accessories).


    Continuous Current Discharge Graphs
    F406CC59-099F-481F-AE59-F49CE9B00773.jpeg 8CD8FC63-F888-4337-BEEF-91E58FA03D61.jpeg


    Ratings and Performance Specs Graphic
    1591D6E6-0CCF-45BC-AF39-7DC8E1475714.jpeg

    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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