A Battery Question
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Tourer
Joined: Aug 2008
Posts: 442
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you are seeing a voltage drop. Amperage is what counts. Have some one check the output of the charging system to see if there is a problem. Unless you know how to use the multimeter and an ammeter also. You said the guy who worked on the bike had a problem charging the battery, was he charging the battery with the engine or a battery charger? I wouldn't rule anything out at this point, and don't blame the mechanic yet. Coincidences do happen... 
Road Master
Joined: Jan 2008
Posts: 968
Likes: 11
From: Oconomowoc, Wisconsin
Check the battery grounds first.. bad grounds will keep your battery from charging fully...
To check if the stator is putting out enough AC Votage.. Pull off the Regulator to Stator plug..use a meter to check for contituity between either of the 2 pins and the crankcase.....should be zero Ohms.. Resistance should be .o1 - .02 ohms across the stator socket... if not..stator is bad. start the bike...take a reading across the socket...it needs to be at least 32-40 AC Volts at 2000 rpm. if not..stator could be bad..
To check if the stator is putting out enough AC Votage.. Pull off the Regulator to Stator plug..use a meter to check for contituity between either of the 2 pins and the crankcase.....should be zero Ohms.. Resistance should be .o1 - .02 ohms across the stator socket... if not..stator is bad. start the bike...take a reading across the socket...it needs to be at least 32-40 AC Volts at 2000 rpm. if not..stator could be bad..
Last edited by kyote; Feb 6, 2010 at 07:48 AM. Reason: Read the manual.....lol
Advanced
Joined: Aug 2008
Posts: 86
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On a Harley, you are running everything off of the battery not the charging system like in a car. On a car, if you disconnect the battery everything will keep on running off of the charging system but on your bike if you disconnect the battery while it is running, it will die and everything will go dead.
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