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Rusty in Bend

Proper Electrical Panel Positions for Charging

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I have a 1999 Signature 25 Cruiser that i bought used a couple of years ago.  I've gotten several pieces of conflicting advice on the proper Electrical Panel and Battery Selector switch positions when using the internal battery charger to charge the battery when I have it out of the water for the winter and in its nice, warm, weather-protected garage.  My "boat guy" says:

  • Shore Power plugged in to 110 Volt AC
  • Battery Selector Switch to "Both"
  • AC Main to "On"
  • AC Battery Charger to "On"
  • DC Main to "On"

That just seems like it's a lot of stuff "On", and I was wondering if my batteries will charge from Shore Power if the only thing I do is AC Main "On" and Battery Charger "On" ... with everything else (Battery Selector and DC Power) in the "Off" position?

Anybody out there have an authoritative answer for me?

Rusty in Bend (OR)

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I have no way to know how your boat has been wired / modified / by previous owners / marina staff. So I will not guess.

I also do not know if your A C charger is working correctly.

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In newer boats, the batteries will charge just fine with the battery selectors switched to "off".  If you think about it, you want to leave the boat in the slip for a week, you certainly don't want to leave the battery switches on.  As Cyclops said, we have no idea how your boat is wired, so take this as a suggestion and not as a recommendation.

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