We recently bought a 1991 Arima Sea Chaser with a 90 HP Johson and a 15 HP Johnson kicker, and it has a single battery set-up. I'm looking at buying a couple of electric downriggers, an electric heater, new FF, etc. I don't think a single battery set-up can safely handle that much so I'm interested in converting to a duel battery set-up. Basically a set-up that uses one battery for the motor and a second for the electronics, yet both are continuously charged while running.

Can someone point me to a good boat how-to site that will show how to convert to a duel battery setup? Or even a real good book on the subject? It would be a nice bonus if it also had good info on setting up electronics, (especially the downriggers), replacing bilge pumps, rewiring gauges, etc.


Thanks!