Disabling Touch Screen= More battery life?

[samuelrawrs]

Hello! For years, I've wondered if disabling certain functions on my laptop will allow it to last longer away from the wall plug. Recently after acquiring a yoga 720 15 inch (4k), the lacklustre battery life got me wondering if disabling the touch screen function would help show significant improvement in battery life.

 

After a bit of research, there hasn't been any conclusive evidence of this working and I was hoping someone here would be able to help me out

[Eduard the weeb]

https://lifehacker.com/touch-screen-laptops-are-a-battery-drain-even-with-tou-1707236141

 

seems not 

[EunSoo]

Undervolting would probs be a better way to get more battery life

[Sniperfox47]

1 minute ago, samuelrawrs said:

Hello! For years, I've wondered if disabling certain functions on my laptop will allow it to last longer away from the wall plug. Recently after acquiring a yoga 720 15 inch (4k), the lacklustre battery life got me wondering if disabling the touch screen function would help show significant improvement in battery life.

 

After a bit of research, there hasn't been any conclusive evidence of this working and I was hoping someone here would be able to help me out

The touchscreen capacitive layer draws almost no power at idle and is negligible even when registering input events. It also typically used i2c or spi to connect to the CPU rather than normal USB in order to use less power to move the data.

 

Realistically if it does make a difference it will be unnoticeable. Disabling Bluetooth and Wifi and dropping screen brightness and resolution will have a *much* bigger impact.

[dalekphalm]

1 minute ago, samuelrawrs said:

Hello! For years, I've wondered if disabling certain functions on my laptop will allow it to last longer away from the wall plug. Recently after acquiring a yoga 720 15 inch (4k), the lacklustre battery life got me wondering if disabling the touch screen function would help show significant improvement in battery life.

 

After a bit of research, there hasn't been any conclusive evidence of this working and I was hoping someone here would be able to help me out

Disabling the touch screen via Windows likely won't save any power at all, because the digitizer components are still powered on.

 

You'd probably have to physically disconnect the hardware.

 

And it probably won't save you more than a few minutes of total battery life at best anyway.

 

But I don't think anyone has tested this.

[genexis_x]

The 4k resolution is the cause, downscale desktop resolution to 1080p may help