While this customer's SuperSump Sump Premier Pump System functions to pump up to 2,220 gallons of water per hour out of their garage, the customer decided during annual maintenance with Chris to add the UltraSump Battery Backup System. This additional battery-operated pump kicks in during a power outage or malfunction of main pump, thereby continuing to pump water out of the garage area. This backup system can pump more than 11,500 gallons of water on a fully-charged battery, providing continue protection against flooding until the main pump is operational again!