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Bench Test Results: LG HG2 w/QR code 20A 3000mAh 18650...slightly under capacity, ran a bit hotter

Discussion in 'Batteries and Chargers' started by Mooch, Jan 9, 2019.

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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. Use of these batteries is AT YOUR OWN RISK. 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.

    F904E6CD-52D2-4596-9692-53F7882E96B5.jpeg 93D29A1B-FC99-4975-957C-AC0C662F1795.jpeg 5218C855-1A7D-45F3-8ABF-33C8697396A4.jpeg 4C4152DE-95BA-4F85-A9FE-25DE7A786210.jpeg

    Bottom Line
    This HG2 has a QR code square on the the wrap. It performed well but one cell measured a little under 3000mAh and both cells I tested ran a few degrees too hot to be rated at 20A. I don’t think you’ll notice any performance difference between these cells and any other HG2’s without the QR code though.

    In the datasheet LG set a maximum surface temperature spec of 75°C. The cells I tested reached 80°C and 81°C at 20A. This forces me to lower the current rating by a bit from the 20A spec in the datasheet.

    The capacities for the two cells I tested were 2975mAh and 3012mAh at 600mA (0.2C) down to 2.5V. This is okay consistency.

    I am giving the HG2 (with QR code) a continuous current rating of 18A and a “temperature limited” rating of 20A. You can run it at 20A if you do not allow it to reach 75°C. I am giving it a capacity rating of 2900mAh since one cell did not reach 3000mAh and I am sure I do not have the lowest capacity cell from that batch.

    Two cells were donated for the purposes of testing by 18650BatteryStore (18650 Battery Store | 18650 Lithium Ion Batteries, Chargers and Wraps). Thank you!

    Continuous Current Discharge Graphs
    AAED8912-550A-4444-AB0A-63A0B7BDBBDB.jpeg 52D234CB-CA46-458D-913C-D70F2DD803BA.jpeg

    Ratings Graphic

    Performance Specs
    - DC Internal Resistance = 24.0mOhms (milliohms) average for the two cells.
    - Total energy delivered down to 3.2V at 10A continuous = 7.8Wh
    - Total energy delivered down to 3.2V at 20A continuous = 5.3Wh

    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 and testing 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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