Cypriot here, and trust me… not much happens on this island so quarrels like this are not uncommon.

Iirc the SD does discharge from full battery a bit when plugged in for a while to preserve battery health.

Thanks for the in depth response! So if I understand correctly, it’s better for battery health to use the bank first then the steam deck.

However if for arguments sake I want to get the maximum amount of play time, would bank first then SD still be the right way to go? I’m asking as perhaps the steam deck uses more power when plugged in as it doesn’t believe it should be preserving charge?