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Ground Power Jack Question

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MikeEasley(at)aol.com
Guest

Posted: Sat Sep 23, 2006 5:24 am Post subject: Ground Power Jack Question

I installed the Ground Power Jack according to the article.  I built  jumper cables from some Harbor Freight "el cheapo" cables and a plug from  A/S.  I tried to hook up my battery charger to the jumper cables  and charge my battery but the contactor won't close.  It appears  that my charger won't put out any current unless it "senses" a battery is  connected.  If I hook my jumper cables to a spare car battery, everything  works fine.

  

 Mike Easley

 Colorado Springs

 Lancair ES 12V

  [quote][b]

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nuckollsr(at)cox.net
Guest

Posted: Sat Sep 23, 2006 7:16 am Post subject: Ground Power Jack Question

At 09:21 AM 9/23/2006 -0400, you wrote:



 	  Quote: 	
		  I installed the Ground Power Jack according to the article.  I built 

jumper cables from some Harbor Freight "el cheapo" cables and a plug from 

A/S.  I tried to hook up my battery charger to the jumper cables and 

charge my battery but the contactor won't close.  It appears that my 

charger won't put out any current unless it "senses" a battery is 

connected.  If I hook my jumper cables to a spare car battery, everything 

works fine.



Mike Easley

Colorado Springs

Lancair ES 12V


	


   Yup, some chargers are like that. You might need to 'float'

   a small battery across the charger terminals external to the

   airplane to wake it up so that you can get power to the

   ship's battery for charging.



   Understand further that having a fixed, external power

   contactor's coil load on a 'smart charger' will probably prevent

   it from going into the maintenance mode when ship's battery

   achieves full charge.



   Smart chargers should be fitted with low current, fused

   feeders directly to the battery bus. A connector set like



http://www.aeroelectric.com/Pictures/Connectors/274-010.jpg



http://www.aeroelectric.com/Pictures/Connectors/274-013.jpg



   might do nicely. These parts are available from Radio Shack.



   Bob . . .



      ---------------------------------------------------------

      < What is so wonderful about scientific truth...is that >

      < the authority which determines whether there can be   >

      < debate or not does not reside in some fraternity of   >

      < scientists; nor is it divine. The authority rests     >

      < with experiment.                                      >

      <                            --Lawrence M. Krauss       >

      ---------------------------------------------------------

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