Gnome-power-statistics is run when you click on the battery icon in the top panel of a laptop. It shows battery history such as charge and rate, as well as statistics such as discharge profile and discharge accuracy.
The more you use your laptop, the more data it shows, and the more accurate the battery time-to-empty predictions are.
So, where does gnome-power-statistics get the raw historical data from?
And, if it also saves any data, where does it save it to?