Which kinds of blocks (among Cables, Transformers, Battery Boxes, Motors, etc.) back-propagate the on-off state from energy-consuming machines to Battery Box outputs? In other words, for an Energy Network involving Transformers, can it be assumed that Battery Boxes will always auto-limit outputs acc…

Transformers and Batboxes won’t emit if there is nothing that accepts the Energy, so in that way it definitely is smart enough to not be wasteful.