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Charging system Battery not charging. Bike will run on full battery .Which parts can I replace ? My manual shows a regulator on the alternator . It shows brushes in the alternator, but it doesn't show a stator, that I thought all bikes have.Is there any other part between the alternator and the battery that could be suspect ?

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  • Motorcycles Master
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Bridge rectifier ...

Posted on May 21, 2013

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Posted on Jan 02, 2017

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SOURCE: charging system

I think 13.26 is very good for a bike of it's age. Especially charging a bigger cell battery such as a car battery! I wouldn't worry to much about your charging system looks to be doing just fine. almost sounds like your bike needs to be taken out for a Relief of sitting run.

Posted on Nov 10, 2008

goofduck
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SOURCE: Problem with charging system. With a fully charged

the voltage regulator is bad

Posted on May 06, 2009

  • 1 Answer

SOURCE: Alternator not charging battery on getting 11.5

I had the same problem with my 900 that I just bought, the regulator was fried, so the local kaw shop replaced it with a new one off internet, then it promptly fried the new one, upon further investigation the rotor/armature was reading 1 ohm resistance, supposed toread 4/7 i think anyway, had to have alternater rebuilt , cost 370.00 , works fine now.

Posted on Aug 06, 2009

  • 66 Answers

SOURCE: my battery is not charging when bike is running (gsxr 600 k6 )

When you put a voltmeter across the battery terminals, you should get >13.5V (typically) with the engine running. 
If less than this then your charging system is faulty and your battery will not charge. 
See this personally authored thread for a diagnostic guide on how to determine whether you have a problem with your stator or Rectifier/Regulator - inlcuding some cold resistance checks you can do on the R/R to determine if it is shorted. 
[url]http://www.triumphrat.net/speed-triple-forum/104504-charging-system-diagnostics-rectifier-regulator-upgrade.html[/url]
It was written initially for Triumphs, but applies to ANY 3-phase motorcycle charging system. 

Posted on Aug 15, 2009

  • 16 Answers

SOURCE: The charging system is not working properly. With

What I learned on my '07 C90T----- is if it doesn't charge, it doesn't run for long.
I bet it's the battery.

I've had charging problems and I do blame a portion of it on Suzuki's connectors at the regulator/rectifier not being weatherproof.

I had to replace my battery at less than 10000 miles.
I had to replace the regulator/rectifier last April.
I had to replace the stator just two weeks ago.
When troubleshooting, I disconnected the stator at the reg/rect and only got 40 volts at high rpm.
It's supposed to put out 80 volts.
Got the stator from regulatorrectifier.com for half what the Suzuki shop wanted. Paid $173 shipped.

Posted on Oct 03, 2009

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1 Answer

1996 Aurora with intermittent charging issues. New alternator and battery.


Are you aware that this charging system is computer controlled ? There is also a temp sensor for the battery > Battery Thermistor
In addition to the voltage regulator the charging system also utilizes a battery thermistor, which measures battery temperature, in order to control system voltage. A procedure for replacement of the battery thermistor can be found in this section.

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How old is the battery? You need to check if the alternator is putting out a charge, is the regulator working. A dead cell in the battery will often show a full charge state if you try to charge it. When you try to start the bike the battery is required to give a high charge to the starter. The buzzing you hear is probably the starter solenoid trying to work. I would suggest fit a new battery and if the bike starts OK check out the charging system. 14.4 volts is the normal reading across the battery with the engine running at 5K.

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1 Answer

While riding at night my bike died and could not be started without battery jump. Where do ifind the magneto and regulator to test? and wht output should i be expecting?


its an alternator not magneto, there should be 3 wires white or yellow, going to the reg\rectifier, multi meter across any pair(unplugged) should show 50-80 volts at 2000rpm non of these should short to earth, multi meter across battery should show up to 14v at 2-3000rpm.with everything plugged back in
if alternator checks out, and no voltage more than 12 at battery , replace regulator,,

all assuming the battery wasn't fried when it ran out of acid

my guess is new stator\alternator required

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1 Answer

Battery not charging


It shows full voltage while running because its circulating the power. If its not charging, depending on the bike you have, its the stator or regulator. These are basically the alternators for bikes. Just take it to a shop and theyll usually check it for free. It will just drain the battery everytime you run it until you get those replaced

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1 Answer

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Maybe it wasn't running long enough to charge up the battery?
Stop trying to jump it, when you are having problems with it dying, take the battery off and have it charged. And/or buy a $20 voltmeter to see what the battery shows. If it says less than 12 volts, it is discharged, and needs charging. A good battery that is not run down should have at least 12.5 volts. A new battery that is charged should have very close to 13 volts, maybe 12.8 volts.
When you have the truck running, check the alternator for charging. You put the voltmeter right on the battery and check it again. This time, with truck running, battery should show at least 13.5 volts. That shows the alternator is working. A good alternator will put out about 13 or 14 volts-the regulator will keep it from going any higher to prevent problems, like a melting battery or electrical parts burning out.
I would say get the charging system working right, then address the problem of dying at stop lights. That could be a carburetor problem, if the alternator is working.

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1 Answer

Charging problem


There is a thing called a bridge rectifier. It clips 1/2 of the AC power coming from the alternator. It makes the battery think it is getting DC - it is actually rectified AC. If there is a bad diode in the bridge, your battery will not charge. Test with a flash light battery and lamp. Good will pass power in one direction but not the other. If you can get the light to work in both directions, there is a bad diode.

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3 Answers

1990 Toyota Camry DX 4 cylinder''Swollen battery''short some where?


Your alternater is over charging the battery. Either the alternater is faulty , or just the regulator. Also, check the positive cable from the battery to the starter, and make sure it's not shorting out somewhere.

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1 Answer

Interior lights on but car wont start


STARTING YOUR DIAGNOSIS
What happens when you attempt to start the engine? If nothing happens when you turn the key,"http://www.aa1car.com/library/2003/us20310.htm"to determine its state of charge. Many starters won't do a thing unless there is at least 10 volts available from the battery. A low battery does not necessarily mean the battery is the problem, though. The battery may have been run down by prolonged cranking while trying to start the engine. Or, the battery's low state of charge may be the result of a charging system problem. Either way, the battery needs to be recharged and tested.
If the battery is low, the next logical step might be to try starting the engine with another battery or a charger. If the engine cranks normally and roars to life, you can assume the problem was a dead battery, or a charging problem that allowed the battery to run down. If the battery accepts a charge and tests okay, checking the output of the charging system should help you identify any problems there.
A "http://www.aa1car.com/library/2002/cm10220.htm" that is working properly should produce a charging voltage of somewhere around 14 volts at idle with the lights and accessories off. When the engine is first started, the charging voltage should rise quickly to about two volts above base battery voltage, then taper off, leveling out at the specified voltage. The exact charging voltage will vary according to the battery's state of charge, the load on the electrical system, and temperature. The lower the temperature, the higher the charging voltage. The higher the temperature, the lower the charging voltage. The charging range for a typical alternator might be 13.9 to 14.4 volts at 80 degrees F, but increase to 14.9 to 15.8 volts at subzero temperatures.
If the charging system is not putting out the required voltage, is it the alternator or the regulator? Full fielding the alternator to bypass the regulator should tell you if it is working correctly. Or, take the alternator to a parts store and have it bench tested. If the charging voltage goes up when the regulator is bypassed, the problem is the regulator (or the engine computer in the case of computer-regulated systems). If there is no change in output voltage, the alternator is the culprit.
Many times one or more diodes in the alternator rectifier assembly will have failed, causing a drop in the unit's output. The alternator will still produce current, but not enough to keep the battery fully charged. This type of failure will show up on an oscilloscope as one or more missing humps in the alternator waveform. Most charging system analyzers can detect this type of problem.
thanks,please rate the solution positively.

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2 Answers

My battery is not charging when bike is running (gsxr 600 k6 )


When you put a voltmeter across the battery terminals, you should get >13.5V (typically) with the engine running. 
If less than this then your charging system is faulty and your battery will not charge. 
See this personally authored thread for a diagnostic guide on how to determine whether you have a problem with your stator or Rectifier/Regulator - inlcuding some cold resistance checks you can do on the R/R to determine if it is shorted. 
[url]http://www.triumphrat.net/speed-triple-forum/104504-charging-system-diagnostics-rectifier-regulator-upgrade.html[/url]
It was written initially for Triumphs, but applies to ANY 3-phase motorcycle charging system. 

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try checking your charging system. i would start with regulator/rectifier. they're common to go out.

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