" JimH" wrote in message
. ..
I am planning to purchase a portable 12v charger/power supply for the boat
rather than installing a second battery. My 12v power draw is negligible
(engine starter, cd player, depth sounder) when not running.

This is one unit I am looking at:

http://store.yahoo.com/sports-imports/pore12poposu.html


Any recommendations or am I being foolish by not installing a second
battery with A/B switch for my modest 20 foot runabout?


Oops. I posted Tom's Canuck video link. Sorry. Correction made. ;-)