These cells were purchased with funds donated by the vaping community for the purposes of testing. Thank you! To prevent any confusion with the eGo-type "batteries", I use the term "cell" here to refer to a single 18350, 18650, 26650, etc.
While the test results are hard data, the conclusions and recommendations I make based on these tests are only my personal opinion based on my criteria for setting a rating. Carefully research any cell you are considering using before purchasing.
Testing cells 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.
If the cell has only one current rating number on it, or if it says "max discharging current" then I have to assume that the company is stating that the cell can be discharged at that current level in any way, including continuously.
Bottom Line
This cell seems to be the replacement for the dangerously overrated 40A 3100mAh rewrap of the Samsung 30Q that XXX batteries was selling earlier.
This is a rewrapped but almost accurately rated 15A 3000mAh cell. It also has "40A" on it with nothing telling you what that is. The web site says it's the "Max. pulse current" rating but without knowing more about the pulses and how they set the rating the number is useless.
It appearance is identical to the Samsung 30Q but it performed a tiny bit better than the 30Q's I've tested previously.
The 18650 ratings table has been updated to include this cell
Continuous-Current Test Results
Only 10A and 20A continuous tests were done to confirm that it is a Samsung 30Q
Samsung 30Q Test Results
Samsung 30Q 20A 3000mAh 18650 Bench Retest Results...a great 20A/3000mAh battery!
Comments
List of Battery Tests | E-Cigarette Forum
https://www.e-cigarette-forum.com/f...afety-grades-and-pulse-performance-data.7566/
https://www.e-cigarette-forum.com/f...des-picking-a-safe-battery-to-vape-with.7447/
https://www.e-cigarette-forum.com/f...fety-grades-and-pulse-performance-data.7554//
While the test results are hard data, the conclusions and recommendations I make based on these tests are only my personal opinion based on my criteria for setting a rating. Carefully research any cell you are considering using before purchasing.
Testing cells 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.
If the cell has only one current rating number on it, or if it says "max discharging current" then I have to assume that the company is stating that the cell can be discharged at that current level in any way, including continuously.
Bottom Line
This cell seems to be the replacement for the dangerously overrated 40A 3100mAh rewrap of the Samsung 30Q that XXX batteries was selling earlier.
This is a rewrapped but almost accurately rated 15A 3000mAh cell. It also has "40A" on it with nothing telling you what that is. The web site says it's the "Max. pulse current" rating but without knowing more about the pulses and how they set the rating the number is useless.
It appearance is identical to the Samsung 30Q but it performed a tiny bit better than the 30Q's I've tested previously.
The 18650 ratings table has been updated to include this cell
Continuous-Current Test Results
Only 10A and 20A continuous tests were done to confirm that it is a Samsung 30Q
Samsung 30Q Test Results
Samsung 30Q 20A 3000mAh 18650 Bench Retest Results...a great 20A/3000mAh battery!
Comments
- At 10A continuous it reached about 2800mAh. This is good performance for a 3000mAh cell at 10A so I am rating it at 3000mAh.
List of Battery Tests | E-Cigarette Forum
https://www.e-cigarette-forum.com/f...afety-grades-and-pulse-performance-data.7566/
https://www.e-cigarette-forum.com/f...des-picking-a-safe-battery-to-vape-with.7447/
https://www.e-cigarette-forum.com/f...fety-grades-and-pulse-performance-data.7554//
Last edited by a moderator:
