When your primary pump—or the power—fails, these top-rated models are ready to step in In our lab tests, we measured the ...

This backup sump pump works beside and above your ... The source of power for the pumps. Battery-powered models require 120V power for their chargers; water-powered models require supply of ...

Learn the right way to add water to your Watchdog backup sump pump battery and keep your system running smoothly.