Scott,

The idea of having an extra battey is to lessen the chance of you
running the primary starting battery down while camping.

I myself, would enjoy the thought of knowing that I have an extra
battery besides the one I'm using for the house current.

Johnson Controls makes one hell of a battery--Optima is the best your
money can buy.

If for some reason the monetary outlay is a little much for the
Optima--hit Walmart--they have deep cycle batteries cheap.

 Two is always better----Right Benny?:>)

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Terry--

       "Zoom, Zoom, Zoom"
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