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Cloud Chaser 40A/50A 3200mAh 18650 Bench Test Results...only a 20A battery, but performs like HG2

Discussion in 'Batteries and Chargers' started by Mooch, Oct 29, 2015.

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  1. Mooch

    Mooch Electron Wrangler Verified Member ECF Veteran

    Supporting member
    May 13, 2015
    Tested at 10A-40A constant current and 30A-60A pulsed. These cells were sent to me for free for the purposes of testing. To prevent any confusion with the eGo-type "batteries", I use the term "cell" here to refer to a single 18650, 26650, etc.

    The statements, conclusions, and recommendations I make here are only my personal opinion. Carefully research any battery you are considering using before purchasing.

    Testing batteries at their limits is dangerous and should never, ever, be attempted by anyone who has not thoroughly studied the dangers involved and how to minimize them. My safety precautions are the ones I have elected to take and you should not assume they will protect you if you attempt to do any testing. Do the research and create your own testing methods and safety precautions.

    image.jpg image.jpg image.jpg image.jpg

    Bottom Line
    In my opinion this is a good performing 20A continuous discharge current (CDR) cell with 3000mAh capacity. Its voltage plummets and it suffers damage if discharged at its 40A continuous rating though. It is identical in appearance, and essentially the same in performance, to the LG HG2. Cloud Chaser has told me emphatically that it is not an HG2.

    Continuous-Current Test Results

    Pulsed-Current Test Results
    These tests are done to show the performance of the cell at higher pulsed current levels. If you are running your mod at these levels be aware that you risk overheating, and possibly venting, the battery if there is a malfunction or accidental pressing of your mechanical mod's button.
    image.jpg image.jpg

    Cloud Chaser vs. HG2 Discharge and Appearance Comparison
    image.jpg image.jpg image.jpg

    • This cell is identical to the HG2 in appearance (top cap configuration and surface finish, top cap seal color and size, vent configuration, can shape, and tooling marks) and about equal in performance (voltage under load, capacity, and temperature) to the LG HG2.
    • This cell had up to 4% more capacity than the HG2 and up to 2% higher voltage under load at the start of the discharge. Typical cell to cell variations are up to about 2% so this cell is performing a touch better that the HG2's I tested earlier this year. I do not know if these differences would be noticeable in real world use.
    • At 10A it reached about 2750mAh. This is below expected performance for a 3200mAh-rated cell at 10A. I am giving it a capacity rating of 3000mAh.
    • At 15A the maximum temperature reached 69°C. This is below the average temperature of a cell operating at its CDR.
    • At 20A the maximum temperature reached 82°C. This is above the average for a cell operating at its CDR but just within the range of acceptable values. It is the same temperature as an HG2 at 20A.
    • At 25A the temperature rose to 99°C. This is too high for a cell operating at its CDR and is just a degree below my safety limit of 100°C.
    • Two more 20A discharges showed that no additional damage was being done to the cell at this discharge current level.
    • Discharges at 30A and 35A were not done as the cell would either rise above my 100°C safety limit or its voltage would drop too low to be useful.
    • A discharge at 40A was done to show the cell's performance at its rating. The voltage instantly dropped to under 3.2V and quickly dropped off from there.
    • I am setting a CDR of 20A for this cell. Its temperature is higher than average (same as the HG2) but acceptable and the voltage is good, indicating that it's not being discharged at beyond its rating. While operating any cell near its rated maximum current level causes damage to the cell, I would expect decent cycle life from this cell at 20A.
    • I have included pulsed-current discharges but I haven't set pass/fail standards for pulse testing yet. The discharges were done at 30A-60A, 5sec on/30sec off, down to 2.5V. One chart shows the entire discharge at each level. The other chart is zoomed in to show the first 5 minutes to make it easier to see the voltage sag at different current levels.

    To see how other cells have tested and how hard you can safely push them, check out these links:
    • Like Like x 11
  2. Topwater Elvis

    Topwater Elvis Vaping Master ECF Veteran

    Dec 26, 2012
    Some of us appreciate your efforts Moochy.
    • Like Like x 2
  3. SwedeShooter

    SwedeShooter Full Member

    Aug 28, 2015
    Boonies of Nova Scotia
    I believe most of us do appreciate Mooch. Except maybe the places trying to peddle over-specced batteries to vapers.
    • Like Like x 1
  4. sonicbomb

    sonicbomb Vaping Master Verified Member ECF Veteran

    Feb 17, 2015
    1187 Hundertwasser
    40 amp and 3200 mAh, you would have to be very gullible indeed to swallow that load of turd.
    Good work Mooch, thank you. I was beginning to wonder if you had blown the battery fund on hookers and tequila.
    • Like Like x 2
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