If you are not familiar with streaming from your PC to your deck, here is a reminder that it is really helpful especially with very demanding games like Alam Wake 2 to be able to render in 800p or even super sampling it a bit to 1200p and watching it on the new OLED screen at its full high settings and ray tracing glory.
currently at 46% battery and still 4.5 hrs left according to the steam deck