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post #2 of Old 04-16-2012
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Re: Battery Switch

Well the standard 1-2-both-off switch would connect the starter post to either battery bank. So no, that's not surprising if that's how it's set up. How do you use this switch? Those voltages look to me like you may have a bad battery (or discharged battery) at position two reading only 11.8 volts. The fact that it reads somewhere in the middle on both seems consistent with this and a standard 1-2-both-off switch. Note that means when you're on both without the engine running battery 1 is "charging" battery 2. You don't want this.

That said I know electricity better than boats and standard set-ups. Other people may be able to read more into this.

Last edited by asdf38; 04-17-2012 at 12:13 AM.
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