I have a battery backup sump pump that runs along side of my powered sump pump. It is a 12V pump that uses a deep marine battery. It's that time of year when I am constantly worrying about my finished basement being flooded. Is it possible to 'daisy chain' 2, 3, 4 marine batteries together to make a larger capacity? I am in Canada by the way.

Also, how costly would it be to have a generator hooked up to my electrical panel, and have it run automatically when the power goes out? Are we talking $300, or more like $8000.

Thanks a lot in advance