What does the Mfg of your equipment say about storage in the owner's manual?
I've had my hands on a few engines and Onan/Cummins, for one, is real specific about storage. It requires start up at intervals during storage.
Batteries are another item that doesn't like storage for long periods without charging. Sure, a lead acid battery may start the engine after a long storage time but that isn't doing the battery any favors. As it sulfates, sitting, you are pulling days off it's life expectancy.
For me, it's easy enough to start the high dollar stuff once in awhile over Winter and to maintain batteries.