Test/Review of Aucooma IMR18650 2500mAh (Orange-green)

HKJ · 18.05.2016, 20:56

Aucooma IMR18650 2500mAh (Orange-green)

Official specifications:

Capacity Std. charge / discharge: 2500mAh
Nominal Voltage average of Std. Discharge: 3.70V
Standard Charge: Constant current: 1250mA, Constant voltage: 4.20V, End current(Cut off): 50mA
Fast Charge: Constant current: 4000mA, Constant voltage: 4.20V, End current(Cut off): 100mA
Max. Charge Voltage: 4.20V
Max. Charge Current: 4000mA
Standard Discharge: Constant current: 500mA, End voltage(Cut off): 2.5V
Fast Discharge: Constant current: 10000mA, 20000mA, End voltage(Cut off): 2.5V
Max. Discharge Current: Continuous discharge: 35000mA
Weight Approx.: Max. 48.0G
Operating Temperature: Charge: 0 ~ 50°C, Discharge: -20~ 75°C
Storage Temperature: 1 month: -20 ~ 60°C, 3 months: -20 ~45°C, 1 year: -20 ~ 20°C
Dimension: (D)18.3 + 0.2/-0.3 mm, (H) 66.0 ± 0.2 m

High current cells with moderate capacity.

Discharge curve tracks very nicely and keeps nearly constant capacity up to 20A.
The vertical line at the end of the curve is because I have stopped the discharge, but is still recording, i.e. it shows maximum temperature (gray line) and how much voltage the cell recovered (Red line).

The cell gets warm at 20A discharge, maximum temperature is just below 80°C

At 30A the temperature goes slight above 90°C.

Conclusion

This cell is one of the very good high current cells with decent capacity.

Notes and links

The batteries was supplied by Aucooma for a 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
Compare to 18650 and other batteries

18.05.2016, 20:56	1
HKJ Модератор своих разделов Регистрация: 03.07.2010 Последняя активность: 10.10.2022 08:53 Адрес: Copenhagen, Denmark Сообщений: 1652 Сказал(а) спасибо: 0 Поблагодарили: 2982 раз(а) в 1024 сообщениях	Test/Review of Aucooma IMR18650 2500mAh (Orange-green) Aucooma IMR18650 2500mAh (Orange-green) Official specifications: Capacity Std. charge / discharge: 2500mAh Nominal Voltage average of Std. Discharge: 3.70V Standard Charge: Constant current: 1250mA, Constant voltage: 4.20V, End current(Cut off): 50mA Fast Charge: Constant current: 4000mA, Constant voltage: 4.20V, End current(Cut off): 100mA Max. Charge Voltage: 4.20V Max. Charge Current: 4000mA Standard Discharge: Constant current: 500mA, End voltage(Cut off): 2.5V Fast Discharge: Constant current: 10000mA, 20000mA, End voltage(Cut off): 2.5V Max. Discharge Current: Continuous discharge: 35000mA Weight Approx.: Max. 48.0G Operating Temperature: Charge: 0 ~ 50°C, Discharge: -20~ 75°C Storage Temperature: 1 month: -20 ~ 60°C, 3 months: -20 ~45°C, 1 year: -20 ~ 20°C Dimension: (D)18.3 + 0.2/-0.3 mm, (H) 66.0 ± 0.2 m High current cells with moderate capacity. Discharge curve tracks very nicely and keeps nearly constant capacity up to 20A. The vertical line at the end of the curve is because I have stopped the discharge, but is still recording, i.e. it shows maximum temperature (gray line) and how much voltage the cell recovered (Red line). The cell gets warm at 20A discharge, maximum temperature is just below 80°C At 30A the temperature goes slight above 90°C. Conclusion This cell is one of the very good high current cells with decent capacity. Notes and links The batteries was supplied by Aucooma for a 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 Compare to 18650 and other batteries __________________ My website with reviews of charges, batteries and other stuff: http://www.lygte-info.dk/