drain my battery


Information and questions on GL1500 Goldwings (1988-2000)
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aceofalabama
Posts: 1
Joined: Tue May 08, 2012 9:43 pm
Location: pell city alabama
Motorcycle: 1999 gl1500 se

drain my battery

Postby aceofalabama » Sat Jun 02, 2012 8:59 pm



have a 99 1500se. battery drains badly when switch is on. just wondering if anyone has some items I could check to see what is draining the most. I thought I would just start by removing fuses one at a time and recheck the voltage to isolate the culprit. any other ideas?
ace of alabama
proud father of a US Marine



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Kiwi2
Posts: 182
Joined: Wed Nov 10, 2010 8:07 pm
Location: New Zealand
Motorcycle: 1988 GL 1500/6
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Re: drain my battery

Postby Kiwi2 » Sat Jun 02, 2012 11:43 pm

Is this when the engine is running? ........ can you give a bit more of an idea. Maybe the alternator is not charging?

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RBGERSON
Posts: 2625
Joined: Tue Mar 09, 2010 7:57 am
Location: SCOTTSDALE, AZ
Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: drain my battery

Postby RBGERSON » Sun Jun 03, 2012 8:50 am

What is your volt meter showing while it's running, while at off? Should be charging at over 13v's but under 15v's. Could be a bad cell in the battery, bad alternator..rebuild??? needed, bad connection in charging wiring..
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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seabee_
Posts: 494
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Location: sterling heights, mi
Motorcycle: 1985 Honda Goldwing GL1200
117k miles
1977 Kawasaki kz400
1978 Suzuki GSXr750
1980 Kawasaki GPZ400
1975 Honda CB360T

Re: drain my battery

Postby seabee_ » Sun Jun 03, 2012 9:51 am

To check for battery drain you need to hook a digital volt meter set to miliamps in series to the battery and positive cable. Turn the switch on and see if you have high amp draw. Then start pulling fuses to see when the amps drop. That will show you what circuit is the problem.
Paul
CE1 Navy Seabees/RET
1981 to 2002
ASE Mechanic

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WingAdmin
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Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: drain my battery

Postby WingAdmin » Tue Jun 05, 2012 4:40 pm

seabee_ wrote:To check for battery drain you need to hook a digital volt meter set to miliamps in series to the battery and positive cable. Turn the switch on and see if you have high amp draw. Then start pulling fuses to see when the amps drop. That will show you what circuit is the problem.


That's a pretty good way to destroy an ammeter! If the ammeter is set to milliamps, and you hook it in series with the battery, then turn the switch on, it's very likely going to draw several amps - and many more amps if you turn it all the way to on (headlight on).

You'll want to set your ammeter to measure AMPS first to make sure you aren't drawing more power than the meter is capable of measuring.

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hugger-4641
Posts: 180
Joined: Wed May 25, 2011 1:07 pm
Location: McKenzie, TN
Motorcycle: 1994 GL1500 Aspencade, 1982 CM 200 Twinstar, 1984 VT500 Ascot

Re: drain my battery

Postby hugger-4641 » Tue Jun 05, 2012 7:00 pm

Agreed on this, don't set meter to miliamps! Besides, if the battery drain is down in the milliamp range , a good battery should stay up for a few days at least. I would pull the headlight fuse and any other fuse larger than 5amps before putting the meter in series, then I would add them back one at a time. Most meters have a 10amp fuse on the amperage setting, and fuses for some meters like Flukes can be $20 or more!

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MikeB
Posts: 1228
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Location: Tacoma, WA
Motorcycle: 1998 - GL1500 Aspencade.
2003 - GL1800A

Re: drain my battery

Postby MikeB » Tue Jun 05, 2012 9:56 pm

I think this may be what seabee is trying to say...
If you can get a multimeter with a 200 millivolt scale you can make a poor man's ammeter.

Set your digital multimeter to the 200 millivolt range.
Hook the positive lead of the multimeter the negative battery post and the negative lead of the multimeter to the ground cable (big black one) just above the dipstick.
You now have a pretty good ammeter - each millivolt is approximately one amp.
When you first turn the bike on the multimeter should read about -17 millivolts. That is about normal for a stock 1500.
Start the bike and rev it up - the multimeter should begin to read positive numbers, getting as high as 15 or 20 millivolts. As the battery charges and it's voltage comes up the multimeter will begin to read lower and lower, finally settling out to 2 or 3 millivolts.
MikeB
Tacoma, WA, USA

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seabee_
Posts: 494
Joined: Sun May 29, 2011 8:17 pm
Location: sterling heights, mi
Motorcycle: 1985 Honda Goldwing GL1200
117k miles
1977 Kawasaki kz400
1978 Suzuki GSXr750
1980 Kawasaki GPZ400
1975 Honda CB360T

Re: drain my battery

Postby seabee_ » Thu Jun 07, 2012 3:35 pm

You're right MikeB, When I first typed it out I was on my Droid and my fingers are bigger than the keypad. :lol: I didn't catch the typo at first. And on the drain values, I have had car batteries drain over a couple of days with as little as 70 miliamps. And these batteries tested ok with a VAT40 load tester. You don't want anything more than 30 miliamps for a draw. Anything over 30 miliamps has to be corrected.


Paul
CE1 Navy Seabees/RET
1981 to 2002
ASE Mechanic


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