I just moved to a new house which has a sump pump. I dont even understand how these work as I just moved from downtown out to country. Neighbor told me that your basement floods if there is a power outage during rain. Apparently this happened to previous owners and they neglected to put that on disclosure form. Should I buy a generator? Is it easy to throw a battery back up on this thing? Or do I have to buiy a whole new pump to be assured no problems???? Please help!Joe