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Author Topic: Shore Power No Battery Question  (Read 396 times)

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Stucker

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Shore Power No Battery Question
« on: April 08, 2017, 09:42:59 AM »

On the hard hooked up to shore power. I have removed the batteries.  The only thing I can power are the outlets. How come features like the bilge pump on the breaker panel are not getting any power?
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Scott Tucker
2003 C34 MK II
Hull #1654
Toronto/1000 Islands

KWKloeber

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Re: Shore Power No Battery Question
« Reply #1 on: April 08, 2017, 09:47:28 AM »

 Because they run off the 12 V system, and you removed the batteries!!

 Is your question  "Why isn't my shore charger powering the panel?"?

k
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Twenty years from now you'll be more disappointed by the things you didn't do, than by the ones you did.
So throw off the bowlines.  Sail away from the safe harbor.  Catch the tradewinds in your sails.
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Stucker

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Re: Shore Power No Battery Question
« Reply #2 on: April 08, 2017, 09:49:35 AM »

Because they run off the 12 V system, and you removed the batteries!!

 Is your question  "Why isn't my shore charger powering the panel?"?

k

Yes..  I thought the panel was powered by shore power once hooked up? I know its a dumb question but I just bought the boat and my previous c&c27 was never hooked up to any shore power.
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Scott Tucker
2003 C34 MK II
Hull #1654
Toronto/1000 Islands

mark_53

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Re: Shore Power No Battery Question
« Reply #3 on: April 08, 2017, 09:57:31 AM »

Bilge is usually connected direct to the batteries so even power is off on the main 1-2-b switch, the bilge will run if needed.
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1989 C34 Mk1 M25XP

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KWKloeber

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Re: Shore Power No Battery Question
« Reply #4 on: April 08, 2017, 10:18:44 AM »

Scott,

First, I can't say how/where your shore charger leads are connected to the 12v system.  Presumably direct to the battery terminals or a bus bar? 

If directly to the batteries, and you removed them, then the charger leads are no longer connected to the 12v system.

The other thing is, I'm not a charger expert, but some chargers look for battery impedance before kicking in.  No batteries, no charge.  Some chargers, I imagine, are not a good idea to run w/o a battery load on them.  I had one like that and the instructions weren't clear, and it fried (3 months after the warranty was up.)

So, how are the charger leads connected to the 12 volt?

ken
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Twenty years from now you'll be more disappointed by the things you didn't do, than by the ones you did.
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J_Sail

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Re: Shore Power No Battery Question
« Reply #5 on: April 08, 2017, 04:35:17 PM »

Ken is correct in suggesting that some (many newer) chargers will not turn on their output unless they detect a reasonably healthy 12 battery connected.

So, either put back at least one of your existing 12v battery, or, if you don't want to lug heavy large batteries, buy the smallest cheapest 12v lead-acid battery at an auto parts store, Costco, or Sams/Walmart and wire it up with some sort of temporary connection (automotive posts may not match your cables).

Jeremy
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