Tested at 10A-30A constant current and 30A-60A pulsed. These cells were donated for the purposes of testing by /u/Zigian at ECR. To prevent any confusion with the eGo-type "batteries", I use the term "cell" here to refer to a single 18650, 26650, etc.
Disclaimer
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.
Bottom Line
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.
Comments
To see how other cells have tested and how hard you can safely push them, check out these links:
https://www.e-cigarette-forum.com/forum/blog-entry/list-of-battery-tests.7436/
https://www.e-cigarette-forum.com/f...des-picking-a-safe-battery-to-vape-with.7447/
Disclaimer
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.
Bottom Line
- In my opinion this is a good performing 20A continuous discharge current (CDR) cell with high capacity.
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.
Comments
- At 10A it reached almost 4300mAh. This is fantastic performance for a 4200mAh-rated cell at 10A. I am giving it a capacity rating of 4500mAh.
- At 15A the maximum temperature reached 65°C. This is below the average temperature of a cell operating at its CDR.
- At 20A the maximum temperature reached 79°C. This is the average for a cell operating at its CDR.
- At 25A the temperature rose to 94°C. This is way too high for a cell operating at its CDR.
- Two more 20A discharges showed that no additional damage was being done to the cell, other than what is expected from running at the CDR.
- Two more 25A discharges showed that no additional damage was being done to the cell, other than what is expected from running near the CDR. But, the temperature was way too high to set 25A as the CDR.
- A discharge at 30A was done to show the cell's performance at its rating. The temperature rose to 102°C, above my safety limit of 100°C. This is clearly not a 30A cell.
- I am setting a CDR of 20A for this cell. Its temperature is average and the voltage is pretty 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:
https://www.e-cigarette-forum.com/forum/blog-entry/list-of-battery-tests.7436/
https://www.e-cigarette-forum.com/f...des-picking-a-safe-battery-to-vape-with.7447/
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