The powerful Basement Watchdog Big Dog Computer-Controlled AC/DC Battery Backup Sump Pump System pumps 3,500 GPH at 0 ft. of lift or 2,200 GPH at 10 ft. of lift. This convenient pump fits next to the main AC pump and automatically begins pumping during power outages when the main pump fails or when water flow exceeds the capacity of the main pump. This reliable sump pump system features a 20 Amp charger that recharges the battery quickly and runs the pump with AC current instead of the battery if the power is on.

The powerful Basement Watchdog Big Dog Computer-Controlled AC/DC Battery Backup Sump Pump System pumps 3,500 GPH at 0 ft. of lift or 2,200 GPH at 10 ft. of lift. This convenient pump fits next to the main AC pump and automatically begins pumping during power outages when the main pump fails or when water flow exceeds the capacity of the main pump. This reliable sump pump system features a 20 Amp charger that recharges the battery quickly and runs the pump with AC current instead of the battery if the power is on.