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MikeEasley(at)aol.com Guest
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Posted: Sat Sep 23, 2006 5:24 am Post subject: Ground Power Jack Question |
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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
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Posted: Sat Sep 23, 2006 7:16 am Post subject: Ground Power Jack Question |
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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
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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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