Article Number: 000138286
The following article provides an explanation of why there is a difference between the reported capacity of the battery design and the full charge on a Dell Laptop system.
When looking at the Battery Report utility, you will see that there is a difference in the battery design capacity versus the full charge capacity shown.
(Figure.1 XPS Battery Report)
This can lead people to falsely assume there is a problem with their battery.
Full Charge Capacity: This is affected by several factors that are constantly changing. (For Example, Changes in the external temperature, ambient temperature, system heat soak temperature, along with things such as the number of discharges to 0% and the number of full charge cycles.)
Design Capacity: Has a 10% buffer to allow for external changes during use. (For example, system heat can cause a cell to overvolt ever so slightly.) This prevents the battery from spiking and causing damage to the life of the battery cells.
This is standard industry design and practice and the battery is working as designed.
G Series, Inspiron, Latitude, Vostro, XPS
21 Feb 2021