The Proactive Drum Pump is a powerful little pump that will drain over 185 gallons per hour by connecting to a 12 volt battery or vehicle port. Simply submerge the pump into whatever needs draining, connect the 12 volt battery leads or cigarette plug, and begin pumping. The Drum Pump is maintenance-free and offers a long life using a high performance self-contained 12 volt DC motor. The pump is constructed of super strong ABS material, so it will not rust or corrode.