Little Giant 14942790 RL-SPBS Emergency Backup System with 2500 GPH Sump Pump and Battery Charger with Alarm Automatic sump pump back-up system 12 Volt DC/980 mA battery charger with alarm System includes charger, pump, 1-1/2" street elbow, 1-1/2" check valve, 1-1/2" coupling, battery box Vertical float switch Great performance at 2500 mph