Keeppower 18350 1200mAh P1835C2 (Black) 2017



Official specifications:

• Nominal capacity: 1200mAh
• Nominal voltage: 3.7V
• Charging method: CC-CV
• Charging voltage: 4.20V
• Std. charging current: 500mA
• Discharge cut-off voltage: 2.50V
• Max. constant discharge current: 8A
• Size: 18.6 x 39.0mm

A high capacity protected 18350 cell from Keeppower. The actual cell is also high current, but the protection limits this a bit.










The batteries has good discharge curves, they tracks fairly well and capacity only drops slowly with current. 5A works fine, 7A is limited by the protection.













I did not trip the protection during this test, but as can be seen from the discharge curves it will trip at 7A after some time. I just used an estimated 8A in the info block.





Conclusion

This battery is from the new generation of smaller cell with much improved performance. This means that this battery is one of the best 18350 at the current time. The protection means slightly lower output voltage at high current, a limit on maximum current and overdischarge protection.



Notes and links

The batteries was supplied by Keeppower 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
Comparison to other LiIon batteries