To prevent any confusion with the eGo-type "batteries", I use the term "cell" here to refer to a single 18350, 18650, 26650, LiPo pouch, 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 or packs 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 or pack has only one current rating number on it, or if it says "max", 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 Thunder Power Elite is an overrated and poor performing pack for its factory rating.
Its internal resistance is at least 30% higher than the average of the other packs I have tested, resulting in extra voltage sag. Discharging this pack at its 99A (55C) current rating would quickly bring the voltage down under 10V.
CAUTION: LiPo's use the most volatile of the Li-Ion battery chemistries and can cause extreme injury if abused. Never use a LiPo unless the cells, wraps, wiring, and connector are in perfect condition. Never exceed the CDR of the LiPo unless you understand and accept the risks involved. You are responsible for your own safety, be careful!
My Ratings
Capacity = 1800mAh
Continuous Discharge Rating (CDR) = 20A (11C)
Average Pack IR = 26.1mOhms
Average Cell IR = 7.4mOhms
Dimensions/Weight = 100 x 32 x 27mm/ 158gms
IR = Internal Resistance
mOhms = milliohms
Continuous-Current Test Results
Pulse-Current Test Results
Only one pack was available, and it was damaged during continuous-current testing, so pulse testing was not done.
Comments
CDR = Continuous Discharge Rating. The nearest 5A-multiple of constant-current continuous discharge current that brings the inner cell of a 3S pack to a temperature of 60°C. This is what the LiPo assemblers recommend as the max running temperature so it makes sense to use it as the rating. Especially since the inner cell will be hotter internally than this temperature, perhaps considerably.
Links
LiPo ratings table: LiPo Pack Safety Grades and Performance Table | E-Cigarette Forum
To see how other packs and cells have tested and how hard you can safely push them, check out these links: List of Battery Tests | E-Cigarette Forum
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 or packs 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 or pack has only one current rating number on it, or if it says "max", 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 Thunder Power Elite is an overrated and poor performing pack for its factory rating.
Its internal resistance is at least 30% higher than the average of the other packs I have tested, resulting in extra voltage sag. Discharging this pack at its 99A (55C) current rating would quickly bring the voltage down under 10V.
CAUTION: LiPo's use the most volatile of the Li-Ion battery chemistries and can cause extreme injury if abused. Never use a LiPo unless the cells, wraps, wiring, and connector are in perfect condition. Never exceed the CDR of the LiPo unless you understand and accept the risks involved. You are responsible for your own safety, be careful!
My Ratings
Capacity = 1800mAh
Continuous Discharge Rating (CDR) = 20A (11C)
Average Pack IR = 26.1mOhms
Average Cell IR = 7.4mOhms
Dimensions/Weight = 100 x 32 x 27mm/ 158gms
IR = Internal Resistance
mOhms = milliohms
Continuous-Current Test Results
Pulse-Current Test Results
Only one pack was available, and it was damaged during continuous-current testing, so pulse testing was not done.
Comments
CDR = Continuous Discharge Rating. The nearest 5A-multiple of constant-current continuous discharge current that brings the inner cell of a 3S pack to a temperature of 60°C. This is what the LiPo assemblers recommend as the max running temperature so it makes sense to use it as the rating. Especially since the inner cell will be hotter internally than this temperature, perhaps considerably.
Links
LiPo ratings table: LiPo Pack Safety Grades and Performance Table | E-Cigarette Forum
To see how other packs and cells have tested and how hard you can safely push them, check out these links: List of Battery Tests | E-Cigarette Forum
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