Do some research on the net. A friend just installed one for a customer. It pumps 50 gallons per hour, and discharges 50 gallons of what was your potable water an hour to operate. And discharges it where? When it runs, the whole house water lines resonate, bad. Zoeller and Hydromatic are the best main pumps I can get my hands on. Friends do not give friends plastic sump pumps. That said, the best battery back up I can get is the Aquanot. Top of the line with a maintenance free battery, 7~800 bucks? Thats for pump failure though. Power outage concerns, go with the generator that runs off your fuel supply, and sits in the yard, about the size of a central ac unit. I believe it will lower your insurance also.