No complication for phone battery and cannot be changed. Too many complications are app shortcuts only. Woohoo.
SMZ™
Tuesday, January 14, 2025
Please look at the 'About this app' on this watch face page of Google play store. It needs to install the phone battery level app and there is a download URL. It is a free app verified by Google, so if you install it on both phone and watch, the 'Phone Battery Level' item will appear in the setting for the area.