softtail battery going dead
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Joined: Sep 2007
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From: Ann Arbor, MI
softtail battery going dead
My son has a 05 softtail springer classic. It has a new battery. A couple of times in the last few weeks, the battery was flat enought that it wouldn't start. He posted on this forum a couple of days ago(bgizmo20). I charged the battery overnight. The next morning, I load tested the battery with an automotive tester(Sun VAT-40). It held a 180amp load at almost 11 volts for over 15 seconds. I checked the charging system. It charged about 30amps at 14.8 volts. I checked for a current draw. There was about a 40ma draw. When connecting the battery ground cable to the battery, there is a brief humming noise from the speedo, and the speedo needle moves downward for about 2 seconds. This is with the key off. Is this normal? Thanks ken
Road Captain
Joined: Feb 2008
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From: live in Jackson, NJ
RE: softtail battery going dead
Check that you don't have a pinched wire somewhere causing a draw while the bike is off, re-trace your steps if you have made some recent mods/changes
Bone
Bone
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From: Ann Arbor, MI
RE: softtail battery going dead
Thanks Bone. I checked and there is about a 40ma draw with the key off. It seems to maybe be from the speedo. Most cars can handle a 100ma draw with no problem. The bike is ridden on a regular basis. Ken
Big Kahuna HDF Member
Joined: Apr 2008
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RE: softtail battery going dead
If he has no security system, I wouldn't think there should be any current draw with the key off.
It is normal to get a light spark when reconnecting the battery but this is normally due to the charging ciruit and is only on initial connection.
I think you maybe need to look for a wire rubbed thru or somthhing like that. Since you are seeing a deflection in the speedo in the - direction, that circuit would be a good place to start.
It is normal to get a light spark when reconnecting the battery but this is normally due to the charging ciruit and is only on initial connection.
I think you maybe need to look for a wire rubbed thru or somthhing like that. Since you are seeing a deflection in the speedo in the - direction, that circuit would be a good place to start.
Intermediate
Joined: Feb 2011
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My speedometer on my 2009 street bob is causing a 56miliamp key off draw. I have not replaced it just unhooked it. I have a 16miliamp draw with it unplugged. Looking for a good deal on a used speedo. I assume the speedo is the problem but wonder why I have a 16 miliamp draw with it unplugged.
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