I’ve had my Steam Deck since last June, and noticed the battery would drop from “full” when plugged in to 95% as soon as I unplugged it. I tied the calibration method Valve recommends, but also realized when I check the Battery Health in desktop mode/settings, it’s at 88%…which does seem odd after just one year? Curious to hear how others’ devices are holding up.
I had some major battery issues with my deck after a while. The UI would often show a low battery warning during gameplay, even when the steam menu itself displayed a much higher percentage.
Ended up opening a support ticket. After some back and forth, Steam approved an RMA and I got a replacement. The whole process took a while, but otherwise was painless; I was very happy with the level of support over all.