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FallingTitan said:

probably no touch screen controls. as touch screen wastes battery. the sensor is always ON waiting for the next touch!

just like when you buy a laptop with a touch screen and the version without lasts 2x as long.

 

my Dell xps 13 with non touch screen gives me about 8-10 hrs. my wife has the touch verson and gets 4-7 averages.

the touchscreen xps 13 uses a 4k panelt, the non touchscreen 1080p right? Touchscreen doesnt consume much energy. There are alot of phones that have it activated 24 hrs a day (so you can just touch on your screen to wake your phone up)