Test/review of Molicel INR18650-P28A 2800mAh (Gray)

[HKJ]

Molicel INR18650-P28A 2800mAh (Gray)

Official specifications:

• Typical capacity 2800mAh
• Minimum capacity: 2600mAh
• Nominal voltage: 3.6V
• Standard charge current: 2.8A
• Maximum charge current: 6A
• Discharge cut-off voltage: 2.5V
• Charge cut-off voltage: 4.2V
• Maximum discharge current: 35A
• Internal resistance: 20mOhm
• Internal resistance DC: 20mOhm (10A/1s)
• Ambient temperature: Charge: 0°C ~ 60°C, Discharge: -40°C ~ 60°C
• Typical cycle life: 400 cycles to 80% at 20A discharge.

This is a high current 18650 cell with fairly good capacity.

The two cells tracks very nicely, at 30A the battery got hot and I stopped the test before the battery was empty.

Conclusion

A good high current cell and not that different from the P26A



Notes and links

The batteries was supplied by a reader 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

 

[badtziscool]

Geez. That is an insane amount of current the cell can provide with less voltage sag at very high current draw compared to Sony VTC6.

 

[knucklegary]

I run P26a in my OR Boss. Solid build quality grade A cells.. P28a appears same cell (dimensions?) with slightly more capacity rating?