HKJ
Flashaholic
[size=+3]Samsung INR21700-40T 4000mAh (Cyan)[/size]
Official specifications:
This is a high current with good capacity in the new 21700 format.
The two cells tracks very well and capacity drops slowly with higher current. I had a slight problem with the B cell, my connection in the battery holder was not good enough and it got hot at 30A.
[size=+3]Conclusion[/size]
It is a very good high current and capacity cell and looks to be one of the best at the current time in this size.
[size=+3]Notes and links[/size]
How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries
Compare to 18650 and other batteries
Official specifications:
- Rated discharge capacity: 3900mAh
- Standard discharge capacity: 4000mAh
- Nominal voltage: 3.6V
- Standard charge: CCCV, 2A, 4.20V, 200mA cut-off
- Rated charge: CCCV, 6A, 4.20V, 100mA cut-off
- Max. continuous discharge: 35A with temperature cut.
- Max. continuous discharge: 45A with 80°C temperature cut.
- Discharge cut-off voltage: 2.5V
- Cycle life: 250 cycles to 60% at 6A charge and 35A discharge.
This is a high current with good capacity in the new 21700 format.
The two cells tracks very well and capacity drops slowly with higher current. I had a slight problem with the B cell, my connection in the battery holder was not good enough and it got hot at 30A.
[size=+3]Conclusion[/size]
It is a very good high current and capacity cell and looks to be one of the best at the current time in this size.
[size=+3]Notes and links[/size]
How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries
Compare to 18650 and other batteries
