Originally Posted by Sea Ray
Yeah, I have one of those too. I just don't if it works because luckily it's never been needed. How often do you replace those batteries? I have a marine battery on it
I also have a marine battery on mine, I replace mine every 2 years and then move that battery into my boat (still has some life in it).
I will usually run my battery backup once if I notice the sump-pump running fairly frequently.