Battery operated 12 Volt DC
Adapts to 1-1/2 or 1-1/4 Discharge
Liberty's model 441 takes over when the power goes out. Operating from the power of a marine-grade deep-cycle battery*, the 441 features a high-output 12 volt pump, advanced 5-stage charging system, easy-connect terminal block, battery box and plumbing connections. *(Battery not included.) Designed to be used in conjunction with a primary 120V sump pump.