Join Date: Dec 2007
Location: Madison, WI
Thanked 86 Times in 85 Posts
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Re: Dumb Electrical System Question
Welcome to SailNet! The starter battery needs to be tied into the other batteries if you want to charge all of them at the same time. Normally, there is a selector switch to choose which batteries you are drawing the juice from, and charging to. There are lots of ways to wire, and to use batteries, however, typically when you are motoring you would have the selector on BOTH to charge all batteries. When you are at anchor, you would switch to HOUSE to only discharge the house batteries. If you accidentally run the house batteries, you will still have the starter battery to fire up the engine.