Tested at 10A-25A constant current. This cell was purchased from RTDVapor and donated 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 selected 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 only a 20A continuous discharge current (CDR) cell but it performs about as well as the Samsung 25R. I recommend not using it above 20A though as it runs at a very high temperature at 25A. It might be a Samsung blue 25R (25R2) cell.
Test Results
Comments
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 selected 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 only a 20A continuous discharge current (CDR) cell but it performs about as well as the Samsung 25R. I recommend not using it above 20A though as it runs at a very high temperature at 25A. It might be a Samsung blue 25R (25R2) cell.
Test Results
Comments
- At 10A it reached above 2350mAh. This is not good performance for a 2600mAh-rated cell but it's average for a 2500mAh cell.
- At 15A the maximum temperature reached 66°C. This is too low for a cell operating at its CDR.
- At 20A the maximum temperature reached 79°C. This is average for a cell operating at its CDR. Its capacity at 20A down to 3.2V almost equals the Samsung 25R, which is very good.
- At 25A the temperature rose to 96°C, close to my safety limit of 100°C. This is clearly not a 40A cell.
- No discharges were done at 30A, 35A, or 40A because the cell temperature would have risen above my safety limit of 100°C, significantly increasing the chance of the cell venting or worse.
- Five additional cycles at 20A showed no signs of damage. Because of this and the maximum temperature of 79°C, I am setting a CDR of 20A for this cell.
- The markings on the bottom of the cell are very similar to the blue wrap Samsung 25R (25R2). The 25R2 is the only cell I have tested that has these markings. The tooling marks on the can match the 25R2 too.
- The AWT cell's performance is similar, but a bit lower, than the 25R2. The AWT has a bit lower capacity and runs a few degrees hotter. In my opinion this could be a rewrapped 25R2 though. Perhaps a different grade cell? Just conjecture though.
- To see how other cells have tested and how hard you can safely push them, check out the links in my signature.
