if you have an ipad w same icloud acct and settings then i think you could rule out a corupt icloud acct if it works ok. removing safari bookmarks sync helped a couples yeras ago. but think they fixed that
True. Though I'm not sure I would notice excessive battery usage on my iPad, because that thing's a beast for battery life anyway.
I might set up a Google docs form, asking for the following inputs:
Model, size, colour, network, usage time since full charge, standby time since full charge, wifi/cellular mix (most wifi, mostly not, a similar mix), set up as new or restore, and anything else anyone can think is relevant?
Might highlight if there's a particular network that's better or worse than others.