Xps 9570 UHD 4K battery life

It may help, but the panel still consumes more power than an FHD panel - and you may find the image less than satisfactory.

If you want active pen support, that's the 9575 model - not the 9570, which does not support an active pen.

This has come up before.  It may be some of these shipped with digitizers - but it's not a standard feature, so unless you get to buy somewhere you can try the unit you want to purchase, don't count on using a pen with the system.

Dell will not guarantee pen compatibility with this model.

https://www.youtube.com/watch?v=H9SY98w-Ql0

In this series of video, user is using PN556W  active stylus with 9570 4K UHD sku. 

can dell confirm which models of xps 9570 screen had digitizers ?

sorry double post

The Pens will usually work with compatible 2-in-1 systems.  Logically, this makes sense because you can use a screen configuration which makes it easy to adjust your hand position for writing or drawing.

I feel the best way to know is to check the product sales page and look in the compatible devices section.  But it can be confusing when the 9570 is a normal laptop but the 9575 is a 2-in-1.