HKJ
Flashaholic
[size=+3]Eizfan IMR20700 3100mAh (Black-yellow) 2018[/size]
Official specifications:
This is high current cells and due to that the capacity is fairly low for this size.
The discharge curves tracks nicely at any tested current, at 30A I terminated the discharge a bit early due to the temperature.
[size=+3]Conclusion[/size]
The battery works well above 10A, but may be too hot at 30A continuous discharge.
[size=+3]Notes and links[/size]
Batteries was supplied by Eizfan (Efan) for review.
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
Graphical comparison to 18650 and other batteries
Table with all tested LiIon batteries
Official specifications:
- Rated Capacity: 3100mAh
- Continuous Discharge Current: 30A
- Max. Short Peak Discharge CC: 40A
- Rated Voltage: 3.7V
- Internal Resistance: <30mOhm
- Cut-off Discharge Voltage: 2.5V
- Charge Upper Limit Voltage: 4.20±0.05V
- Charging Metod: CC/CV 4.20V
- Charging Time(Std): 4.0hours
- Standard Charging Current: 0.2C A
- Charging Current: 0.5C A
- Standard Discharging Current: 0.2C A
- Fast Discharging Current: 0.5C A
- Max Discharging Current: 2C A
- Weight: about 60g
- Size: 20*70mm
- Version: Flat Top
- Operational Temperature: Charge (0 ~ 50°C)
This is high current cells and due to that the capacity is fairly low for this size.
The discharge curves tracks nicely at any tested current, at 30A I terminated the discharge a bit early due to the temperature.
[size=+3]Conclusion[/size]
The battery works well above 10A, but may be too hot at 30A continuous discharge.
[size=+3]Notes and links[/size]
Batteries was supplied by Eizfan (Efan) for review.
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
Graphical comparison to 18650 and other batteries
Table with all tested LiIon batteries