Battery Backup Sump Pumps
There's a simple way to ensure that your sump pump continues to operate even when the power goes out: Install a battery-backup sump pump. This two-stage system includes an electric sump pump connected to a 12-volt backup pump that runs off a deep-cycle marine battery. During normal operation, the electric sump pump will pump water from the pit. But if the electricity goes out, the battery-powered backup pump will automatically start up when the pit fills with water. An electric charger keeps the battery-backup pump fully charged so it'll be ready at any time.