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Valkyrie Riders Cruiser Club > General > 1500 Tech Board > alt. causing battery battery
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Author Topic: alt. causing battery battery  (Read 817 times)
slider
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Posts: 449


mulberry arkansas
« on: July 11, 2019, 03:18:46 PM »
Is it possible for the alt. /regulat0r  to go bad and  run battery down?I have put 3 batterys in over the last  6months.....the battery  always seems to be low on water.....sometimes after sitting  over nite she wont start.lights all work as they should.Battery just runs down over night..battery came from honda dealer.97 valk standard with no add ons   help please.
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a proud navy veteran
Chrisj CMA
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Posts: 14765


Crestview (Panhandle) Florida
« Reply #1 on: July 11, 2019, 03:23:47 PM »
What is the volts output with engine at 1000rpm? How many miles are on it?
« Last Edit: July 11, 2019, 03:26:01 PM by Chrisj CMA » Logged
da prez
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Posts: 4357

. Rhinelander Wi. Island Lake Il.
« Reply #2 on: July 11, 2019, 04:46:32 PM »
It is possible that the alternator is over charging.  Back to basics, dis connect the battery , fully charge it. Get a volt meter reading on battery. Hook it back up and start the bike. Recheck the voltage . 13.8V is the max (or close) . If voltage is not to specs , then it may be an alternator. Remove and clean all grounds and connections. A bad ground will cause your problem also.    

       da prez
« Last Edit: July 14, 2019, 06:22:24 AM by da prez » Logged
slider
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Posts: 449


mulberry arkansas
« Reply #3 on: July 11, 2019, 06:31:58 PM »
thanks guys for your help...will follow your suggestions and see what happens..It has 34789  miles   but sat for 4 years.It is a 97
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gordonv
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VRCC # 31419

Richmond BC
« Reply #4 on: July 12, 2019, 03:25:20 PM »
Sort answer, yes, the alt can cook the battery. Is it at those low miles, not likely.

You need to do some more work.

1st, have you read some of the write ups on how to properly charge a new battery? I don't know off hand, but it should be used.

I think more likely your alt isn't charging your battery, and you keep on changing the battery. It's not fixing the problem. You need a volt meter, and to test a few things.

Which flavour of Valkyrie do you have, and any extra accessories on it that could be causing a drain?
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1999 Black with custom paint IS
Bighead
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Madison Alabama
« Reply #5 on: July 12, 2019, 03:27:42 PM »
Gordon he stated no add ons.
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1997 Bumble Bee
1999 Interstate (sold)
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gordonv
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VRCC # 31419

Richmond BC
« Reply #6 on: July 12, 2019, 04:12:16 PM »
Quote from: slider on July 11, 2019, 03:18:46 PM
Battery just runs down over night..battery came from honda dealer.97 valk standard with no add ons   help please.

Missed the no add ons, but with this statement, there is either a draw or the battery is shot. But the 3rd one?

Pull the positive, and with the power off, place the amp meter between it and the batter, and see if you have a draw. There is NOTHING to draw on a stock std/tourer. So I suspect the Stock no add ons, unless he's leaving the power turned on?

How about a picture?
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1999 Black with custom paint IS
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