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 is a poor performing cell with an exaggerated current rating. When discharged continuously at its claimed 40A rating (down to 3.2V) it only delivered 14mAh. Yes, only 14mAh.
Its appearance is identical to the LG HG2 but the Enook has a higher internal resistance and performs worse. It seems to be a rewrapped lower grade HG2.
I am rating this Enook at 20A and 3000mAh but it sags more than the HG2, delivering about 10% less capacity. The 18650 ratings table has been updated to include this cell.
Continuous-Current Test Results
Pulse-Current Test Results
No pulse tests were done as this is an HG2.
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 is a poor performing cell with an exaggerated current rating. When discharged continuously at its claimed 40A rating (down to 3.2V) it only delivered 14mAh. Yes, only 14mAh.
Its appearance is identical to the LG HG2 but the Enook has a higher internal resistance and performs worse. It seems to be a rewrapped lower grade HG2.
I am rating this Enook at 20A and 3000mAh but it sags more than the HG2, delivering about 10% less capacity. The 18650 ratings table has been updated to include this cell.
Continuous-Current Test Results
Pulse-Current Test Results
No pulse tests were done as this is an HG2.
Comments
- At 10A and 20A continuous you can see the effect of this cell's higher internal resistance versus a standard A Grade HG2. The Enook's voltage is lower and this results in less vaping time before a low voltage cutoff is reached.
- At 40A continuous, the cell's rating, the voltage instantly collapsed to about 3.25V and quickly down to 2.8V. It only delivered 14mAh down to 3.2V. This is quite clearly not a 40A cell.
- I am setting a CDR of 20A for this cell. While operating any cell near its rated maximum current level causes damage, I would expect ok cycle life at 20A continuous.
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//
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