Hey Bassapillar:

My boat has an onboard 3 bank charger....it claims that after the batteries are charged up, it will just sit in idle...

I'm not really too thrilled to just have that thing sitting in idle for 5-6 days inbetween trips...I get the impression the onboard chargers are sorta cutting corners to get the job done...ie they don't provide the quality of charge like a manual charge system, and not so sure how well the idle/float piece works.

I do know, my 3 bank will stay warm/hot even during the idle period, which is not ideal...I just would rather kill the power altogether...

MP