Test/Review of Aosibo IMR18650 2600mAh (Yellow)

Yanic_Osbest · March 6, 2015, 3:34am

HKJ:

Aosibo IMR18650 2600mAh (Yellow)

Official specifications:

Nominal Capacity: 2600mAh

Nominal Voltage: 3.70V

Charging Voltage: 4.2V

Discharge Cut-off Voltage: 2.5V

Max. cont. discharging current: 30A

Cell Dimension: Diameter 18.3±0.2 mm, Height 65.0±0.2 mm

Cell Weight (Approx.): 46g

Initial internal impedance Max, at 1000Hz.: <=10 mOhm (Charged)

Charging Current (CC/CV): Rapid charge 2CA×2.5hrs, Standard charge 0.5 CA×4hrs

Operating Temperature Charge: 0°C ~ 60C°

Operating Temperature Discharge: –20°C ~ 75°C

Storage Temperature: –20°C ~ 45°C

A high current battery with fairly high capacity.

The battery is marked with two currents 30A is the continuous discharger current and 60A being a unspecific pulse discharge.

Fairly good tracking between the two cells and capacity hold fairly well at 30A. As usual the reason for slightly more capacity at very high currents is heat. The high current heats the cell and chemistry works better when warm.

Conclusion

This battery has very good performance and capacity at high currents.

Notes and links

The batteries was supplied by Aosibo 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
Compare to 18650 and other batteries

Thank you Henrik, really appreciate your help.