How could I hook up an auxiliary sump pump (using car type battery) in the same sump well as electric pump?

Question

It's the switch mechanism that is stumping me.

Answer 1

Ok, using a pump with a 12 volt system, doesn't usually mean its going to be pumping the gallons per minute that a regular 110 volt system would.

Twelve volt systems aren't designed for heavy flow.

Now, you can "stack" pumps on top of each other, using the same effluent pipe, but you have to have a check valve in line for each pipe, so that it doesnt back flow into the other pump and make a "round robin" effect.

You 'could' get a "water back up pump", activated and run by water. This way, you wont have to worry about electricity failing.

The float would be in the same "sump", and not get in the way of the electric sump pump, and you wouldnt have to worry about either pump failing then.

Sorry, I dont have a URL for you on this one...
So you will have to do a google search on back up sump pumps.

I wish you well..

Jesse

Answer 2

a backup pump has a secondary float above the main float that only trips if no. 1 doesn't work and the water level gets higher. go to the store and see if they have a diagram on the side of the box. a car battery usually isn't a good idea for long term. a charger is also required. why are u trying to invent something that's already been improved.