Originally posted by Washell:

I'm assuming at some point we'll get an option to fill to capacity in one go, if there isn't a mod already that does that. Maybe even in the hearth & home update.

there is a mod but it quite often overloads them past their limit, not so much in solo play but most definitely in co-op games, read of few tales of it rendering their unit broken but the times ive used it, it never actually broke and unfortunately it isnt very compatible with other mods