It' not batteries, but ....
Someone mentioned about using special automatic switches to feed the auto's power to the house. Well I've been doing it Mexican style for years. It's called "Manuel". Just simple elbow and hand work. All I do is number one: OPEN the house's fuse box main circuit breaker that's fed from the street. Next, plug in your car or generator's electrical output into a house's standard electrical outlet. For me, I use a long and large diameter cable with male plugs on each end. One end gets plugged into the generator, and the other end gets plugged into the house's external 220V outlet. Don't start the generator before doing this!! Then start your generator! The 220V current gets distributed throughout the entire house, to power anything you normally have been using.
You simply have to have the presence of mind to OPEN your main Circuit Breaker first! Otherwise, you'd be electrocuting some poor lineman worker, down the line. And second, you are working with a cable that has two MALE connectors on each end. DO NOT run your electrical source while plugging in the AC cable from the electrical source to your house. This is the best way to avoid an accidental electrocution of your person. Lastly, don't tell your neighbors that you are doing it this way. One of them may just be an idiot, and do things wrong way, and become toast. Enjoy!
