I've been using Dropbox camera upload to automatically sync my pictures to my PC using my data plan (this part is important, I can't use a wifi).
However, this autosync eats up the battery like crazy, so I'd like it to only sync when the phone is charging. I always connect my phone to its stand as soon as I'm home, so I'll still have the pictures synced to my PC merely a few minutes after getting home (without having to do anything manually).
Dropbox, unfortunately, doesn't offer this option (syncing only when charging).
Is there another photo-sync service/app that does? (picasa, g+, facebook, etc)