Tested at 10A-40A constant current and 60A pulsed. These cells were graciously donated by Zigian at Reddit's /r/electronic_cigarette sub 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.
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 15A continuous discharge current (CDR) cell with average capacity for its rating. Its top cap, can, tooling marks and performance are essentially identical to the Samsung 30Q.
Continuous-Current Test Results
60A 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
List of Battery Tests | E-Cigarette Forum
18650 Safety Grades -- Picking a Safe Battery to Vape With | E-Cigarette Forum
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 15A continuous discharge current (CDR) cell with average capacity for its rating. Its top cap, can, tooling marks and performance are essentially identical to the Samsung 30Q.
Continuous-Current Test Results
60A 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
- At 10A it reached about 2750mAh. This is about average performance for a 3000mAh-rated cell.
- At 15A the maximum temperature reached 69°C. This is too low for a cell operating at its CDR.
- At 20A the maximum temperature reached 81°C. This is a bit above the average temperature for a cell operating at its CDR but the same as the HG2 and 30Q.
- At 25A the temperature rose to 95°C. This is way too high to set 25A as the CDR.
- Discharges at 30A and 35A were not done as it would have resulted in the cell temperature exceeding my 100°C safety limit.
- A discharge at 40A was done to show the performance of the cell at Eizfan's continuous current rating for this cell. The voltage dropped quickly to 3.3V and the discharge had to be aborted before it had finished due to the cell going over my 100°C safety limit. This is clearly not a 40A cell.
- A single pulsed-current discharge at 60A (4 secs on/30 secs off) was done to test the cell at Eizfan's pulsed rating. The first pulse dropped the voltage down to about 2.8V. Its temperature rose to 90°C before the voltage eventually dropped to 2.50V. This cell would easily exceed 100°C if taking more frequent draws at 60A.
- The cell's appearance (top cap, can, and tooling marks) and performance matches the Samsung 30Q but it's impossible to know what grade the Eizfan cell might be.
List of Battery Tests | E-Cigarette Forum
18650 Safety Grades -- Picking a Safe Battery to Vape With | E-Cigarette Forum
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