What I want to know is...is it "urban legend" that if you put a battery on concrete, that it will discharge faster than if you place it on a piece of wood or some other insulator. May not sound too tech, but just wait. I truly don't know the answer. I'm interested in the theory either way. Thanks....

 

Personally I prefer cherry or some oiled teak, but if they aren't readily available at Home Depot, I just put the battery on the concrete floor.

Seriously, the only reason I see for using a wood underlay is to keep any acid which leaks or drips (from the old style batteries) off the concrete.

Battery trays in cars are usually steel, which is a fair conductor of electricity.

 

I had one laying on the floor out here for almost a year now. tossed it in the car and she fired right up

 

Battery case design about 30-40 years ago may let the battery drain when sitting on the concrete. With the battery construction now that has become an urban myth. I have a bunch of batteries sitting on the floor in my garage. None of them drain down.

 

That was my exact arguement with someone on the subject. Thought I would present it to the "experts"...
My assumptions are probably correct...
Thanks....(although I did think it would get a bit more "technical")