I have purchased both a primary and battery backup sump pump to be installed in the sump and would like some feedback on my purchases. As a primary pump I picked up a Flotec FPSC4550A 3/4 hp (5150 GPH) at Home Depot. It comes with a limited lifetime warranty, is supposed to be virtually silent so it won't wake you at night, and be two times more energy efficient (I guess compared to their previous model).
As a backup I bought (on eBay) a Basement Watchdog "Big Dog" BWD-12-120C AC/DC Battery Back-up pump. (3500 GPH) that is supposed to run for 7.5 hours continuously or "for days" intermittently if the power is out. It has battery diagnostics so if the battery is old or has problems, your first warning of the problem is not the basement flooding.
The pump(s) would need to lift the water about 10 feet, and then it would go under the floor joists 15 to 18 feet before being discharged outside. I understand both the vertical and horizontal runs will reduce the effective GPH capacity. I really don't know how many GPH I might have to deal with (though I recall the water swirling around the floor drain the first time I discovered the problem!)
What I have tried to do is buy good quality pumps that should be able to handle anything that might happen (maybe "overkill", if that is what I have done, isn't necessarily a good thing?). But if we are going to spend the money for the drain tile installation, and then to re-finish the basement, I don't want to "go cheap" on the sump pumps.
Do my purchases make sense for my situation? Any comments, thoughts, or real-life experiences that can be related would be appreciated.