Stator or Voltage Regulator

gaillarry · 06-05-2012, 01:19 PM

The battery in my 2001 keeps dying. At idle the battery charges at 14.2 volts, as I increase the throttle the voltage drops to 13.2 but still charges the battery. Suspect my 3 yr old battery needs replacement but shouldn't the voltage increase as the rpms increase?

**jonathan180iq** · 06-05-2012, 02:37 PM

At idle, there is no way you are producing 14.2 volts. Something is wrong there.

I would charge around 13..6-13.9 at speed on a healthy system. At idle, the bike should just be bubbling a tick over 12.4-12.6.

viewtopic.php?f=3&t=1036&hilit=volt+meter

gaillarry · 06-05-2012, 03:23 PM

I checked the stator it's putting out 60 volts AC at about 5000 rpm and its not shorted to ground. I think the volt regulator is the problem.

blaine · 06-05-2012, 04:23 PM

Sure sounds like the regulator to me.

:cool:

Road_Clam · 06-05-2012, 04:34 PM

Faulty voltage regulators can do both , not charge at all (most common) but they can also "overcharge" ( >15V) . Overcharging will "boil" the internal battery acid and cause your battery to deplete of liquid acid and now you have a junk battery.

OldNTired · 06-05-2012, 11:44 PM

Quote:

Originally Posted by Road_Clam

Faulty voltage regulators can do both , not charge at all (most common) but they can also "overcharge" ( >15V) . Overcharging will "boil" the internal battery acid and cause your battery to deplete of liquid acid and now you have a junk battery.

Agreed, but before buying a new battery make sure that
both wires going to the battery are good and clean,
and the connections are good. Corrosion or a bad connection
on either one can lower the charging voltage for the new battery..

06-05-2012, 01:19 PM	#1
gaillarry Junior Member Join Date: May 2008 Location: Ontario, Canada Posts: 24	Stator or Voltage Regulator The battery in my 2001 keeps dying. At idle the battery charges at 14.2 volts, as I increase the throttle the voltage drops to 13.2 but still charges the battery. Suspect my 3 yr old battery needs replacement but shouldn't the voltage increase as the rpms increase? Login or Register to Remove Ads
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06-05-2012, 02:37 PM	#2
jonathan180iq Super Moderator Join Date: Jan 2007 Location: Dalton, GA Posts: 3,996	Re: Stator or Voltage Regulator At idle, there is no way you are producing 14.2 volts. Something is wrong there. I would charge around 13..6-13.9 at speed on a healthy system. At idle, the bike should just be bubbling a tick over 12.4-12.6. viewtopic.php?f=3&t=1036&hilit=volt+meter
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06-05-2012, 03:23 PM	#3
gaillarry Junior Member Join Date: May 2008 Location: Ontario, Canada Posts: 24	Re: Stator or Voltage Regulator I checked the stator it's putting out 60 volts AC at about 5000 rpm and its not shorted to ground. I think the volt regulator is the problem. Login or Register to Remove Ads
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06-05-2012, 04:23 PM	#4
blaine Senior Member Join Date: Feb 2010 Location: P.E.I. Canada Posts: 3,784	Re: Stator or Voltage Regulator Sure sounds like the regulator to me. :cool: __________________ If at first you do succeed, try not to look surprised.
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06-05-2012, 04:34 PM	#5
Road_Clam Senior Member Join Date: Feb 2012 Location: sounthern NH Posts: 146	Re: Stator or Voltage Regulator Faulty voltage regulators can do both , not charge at all (most common) but they can also "overcharge" ( >15V) . Overcharging will "boil" the internal battery acid and cause your battery to deplete of liquid acid and now you have a junk battery. __________________ 1984 GPz1100 1987 GSX-R 750 2006 HD Fatboy 2001 KX500 2007 YZ450F 2001 GZ250 (Wife's !) Login or Register to Remove Ads
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