I have a 240W and a 100W charger for my ThinkPad X1 Extreme. One goes into USB-C the other one into slim tip. Based on the available power I want to use different TLP settings, for example run the laptop in battery mode when AC is only <= 100W.

Any ideas where this data is stored? The hardware can recognize it it's lower than 240W because on boot it warns me about it.

I have checked /sys/class/power/AC so far but no luck.