HKJ
Flashaholic
[size=+3]Samsung INR18650-30Q 3000mAh (Pink)[/size]
Official specifications:
Modern high current cells with lots of capacity.
Very good discharge curves, capacity is nearly constant and they track perfectly. Even the 20A curve maintains a decent voltage, but as can be seen below the cell gets warm.
The tail on some curves is because I continue to record after stopping the discharge (If the cell is hot), i.e. it shows how much the voltage recovers.
The cell will heat up at a 10A load, but it is rated for it.
The cell can also handle 20A for some time, but you are supposed to stop when it gets hot (As I do here).
Remember the chart shows above ambient temperature, the actual cell temperature goes above 75°C.
[size=+3]Conclusion[/size]
This cell is very good, it can handle about 15A continuous discharge and has no problems with 20A pulses.
[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:
- Initial IR (1kHz): <18mOhm
- Initial IR (DC): <30mOhm
- Charge method: CC-CV (4.2V+/-0.05V, 100mA cut-off)
- Standard charge current: 1.5A
- Fast charge current: 4A
- End voltage: 2.5V
- Max. continuous current: 15A
- Rated discharge capacity (0.2C): 3000mAh
- Rated discharge capacity (10A): 2700mAh
- Cycle life: 300 cycles to 70% (4A charge and 15A discharge)
- Cycle life: 250 cycles to 70% (4A charge and 22A discharge, pause at 70°C, resume at 50°C)
Modern high current cells with lots of capacity.
Very good discharge curves, capacity is nearly constant and they track perfectly. Even the 20A curve maintains a decent voltage, but as can be seen below the cell gets warm.
The tail on some curves is because I continue to record after stopping the discharge (If the cell is hot), i.e. it shows how much the voltage recovers.
The cell will heat up at a 10A load, but it is rated for it.
The cell can also handle 20A for some time, but you are supposed to stop when it gets hot (As I do here).
Remember the chart shows above ambient temperature, the actual cell temperature goes above 75°C.
[size=+3]Conclusion[/size]
This cell is very good, it can handle about 15A continuous discharge and has no problems with 20A pulses.
[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