StormPro Maxx Heavy Duty Battery Backup Sump Pump System (3000 GPH @ 10') w/ 2 Batteries. If you do not have a generator for back-up power you can rely on this StormPro to pump water long after after your electricity goes out. This unit runs on standard 115V electricity when power is on.    The batteries are maintenance free and convert 12V battery power into 120V electricity.    The pump itself is 1/3HP but is so efficient it pumps more water than most 1/2HP pumps.
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