Tested at 10A-35A constant current and 60A pulsed. These cells were purchased by me and used only for testing. To prevent any confusion with the eGo-type "batteries", I use the term "cell" here to refer to a single 18650, 26650, etc.
These are safety-oriented tests, not for performance. Though you can get a lot of performance information from them they are primarily done to check the manufacturer's/rewrapper's ratings and to establish safe continuous discharge limits.
Disclaimer
The conclusions and recommendations I make based on these tests 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 25A+ continuous discharge current (CDR) cell with good capacity for its rating. It really shines at around 20A
Continuous-Current Test Results
Pulsed-Current Test Results
These pulsed-current tests are only done to show the performance of the cell at its pulse or maximum discharge rating. Do not set your coils or power levels to draw this much current!
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/
These are safety-oriented tests, not for performance. Though you can get a lot of performance information from them they are primarily done to check the manufacturer's/rewrapper's ratings and to establish safe continuous discharge limits.
Disclaimer
The conclusions and recommendations I make based on these tests 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 25A+ continuous discharge current (CDR) cell with good capacity for its rating. It really shines at around 20A
Continuous-Current Test Results
Pulsed-Current Test Results
These pulsed-current tests are only done to show the performance of the cell at its pulse or maximum discharge rating. Do not set your coils or power levels to draw this much current!
Comments
- There are multiple versions of this orange cell available, with almost identical markings. Interestingly, none of the ones on the MNKE web site are 30A/3500mAh. I am thus unable to give you a particular part number to look for when buying these. The only thing I can recommend is to buy yours from IMRBatteries to get the same ones I tested,
- At 10A it reached about 3300mAh. This is average performance for a 3500mAh-rated cell at 10A. I am giving this cell a capacity rating of 3500mAh.
- At 15A the maximum temperature reached 58°C. This is way below the average temperature of a cell operating at its CDR.
- At 20A the maximum temperature reached 65°C. This is too low for a cell operating at its CDR.
- At 25A the temperature rose to 76°C. This is almost the average for a cell operating at its CDR.
- At 30A the temperature rose to 80°C. This is just above the average for a cell operating at its CDR. Some additional voltage sag is seen near the start, indicating that the cell is starting to be driven past its rating.
- A discharge at 35A was done to determine if the cell can be run past its rating. While the temperature did not rise much more over the 30A discharge's temp, the voltage sag was considerable. This is not a 35A cell.
- Five additional cycles at 30A clearly showed signs of damage to the cell. However, all five of these discharges were essentially the same, indicating that damage was not occurring at 30A. In my opinion it occurred during the one 35A discharge. I do not recommend running this cell above 30A.
- I am setting a CDR of 25A+ for this cell. While operating any cell near its rated maximum current causes damage to the cell, I would expect good cycle life from this cell at 25A+.
- A single pulsed-current discharge at 60A (4 secs on/30 secs off) was done to test the cell at its rating. The first pulse dropped the voltage down to about 3.4V. Its temperature rose to 81°C max before the voltage eventually dropped to 2.50V.
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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