Thinking about adding a second battery to your boat? See this link.

[BMANN06]

http://www.youtube.com/watch?v=SYnjKeLxJUw

I think I'll be snapping up one of these.

 

[Steve_Cay]

Hmmm ... not the kind of guy to install a second battery with all the additional weight just so I can blare my subwoofers without the engine running ...

But could be interesting to keep a small secondary battery charged up with just enough juice to switch over and crank the engine in case of battery failure, or running it flat!