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Old 07-18-2009, 07:33 PM   #1
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Question NEW Battery isn't charging: 07 GSXR600

Hello fellas

My 07 GSXR600 is pretty much my all around mode of transportation. I just purchased a new battery 2 weeks ago. The battery died a few days after I bought it so I went to Autozone to get it charged to 100%. I slap it back on and the bike started perfect. Now a week later, as I start it more and more to go to work, it seems hesitant to start more and more. So I get this feeling like the battery is about to die again.

I am more familiar with cars, but I am wondering where the charging system on the bike is located? I'm guessing its not called the alternator because I serached all over for that. The bike has 21,000 miles. Is it common for the charging system to fail at this many miles?

Also, is it a cheap and EASY fix? Or should I just take it to a pro? Thanks in advance!
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Old 07-19-2009, 10:54 AM   #2
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ALSO, a week ago, I was stuck in Conroe with a dead battery. I managed to clutch start the bike and ride it all the way home to Katy. If i was able to clutch start it, the stator generator isn't bad... is it?
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Old 07-19-2009, 10:56 AM   #3
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Old 07-19-2009, 10:57 AM   #4
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Old 07-19-2009, 11:00 AM   #5
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Quote:
Originally Posted by 1slocbr View Post
stator is located on the left side of the engine behind a case cover. easy to replace.
Could also be the rectifier/regulator.

Isn't your bike fuel injected? A fuel injected bike will not run on a dead battery and a bad stator even if it is push started.
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Old 07-19-2009, 11:01 AM   #6
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Old 07-19-2009, 11:07 AM   #7
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http://www.motohouston.com/forums/sh...d.php?t=102406
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Old 07-19-2009, 11:19 AM   #8
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Quote:
Originally Posted by Mr Richards View Post
Could also be the rectifier/regulator.

Isn't your bike fuel injected? A fuel injected bike will not run on a dead battery and a bad stator even if it is push started.
Yes its FI. Im afraid to spend money on parts that aren't bad and that don't fix the problem.

To back track... IF THE STATOR WAS BAD, I would not be able to push start it. And SINCE THE BATTERY WAS BAD, it would not be able to support a >65 mile ride from Conroe to Katy... THEREFORE, the stator is good because it kept my bike running for that long.

So is the battery, stator generator, and rectifier/regulator the only parts to complete this charging system or are their other parts that could cause the battery to not charge?
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Old 07-19-2009, 11:24 AM   #9
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Old 07-19-2009, 11:36 AM   #10
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I'm not trying to contradict you. I just want to be sure.

Heres another thing. After my 65 mile ride after push starting it, I had the battery tested at Autozone and it was tested at 11 volts when it should be 12.xx volts. If it was running solely on the battery, wouldn't the voltage be much less?... considering that injectors, spark plugs, gauges, and brake lights and hazards were on.

Please correct me if I'm wrong about the voltage theory. I get confused with volts, amps, and all that good stuff.
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Old 07-19-2009, 11:45 AM   #11
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Old 07-19-2009, 11:50 AM   #12
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No offense to anyone above, but Im gonna make some general comments below, you decide what may be wrong:


Battery: holds static charge to allow engine starting and completes the electrical circuit for the vehicle.

Stator: creates an alternating current through brushes

Rectifier: converts the three alternating current inputs into a complete power/ground(direct current) circuit to power the bike.


If the bike cranks, the battery is holding a residual charge.

If it doesnt crank but you can push start it, the battery is weak but still holding a charge.

If you can run it all day long, the charging system is function; the ECU requires battery voltage so obviously it is working.

A drained battery wont be able to hold or sustain a charge and will die quicker then a fully charged(not by a simple midtronics/autostore test but by checking w a Vat-40 w carbon discs.) If you turn off the bike and within ten minutes the battery dropped below or close to 12.2v; the battery is inefficient. In cars, 12.7v is fully charged, 12.5v is 75 percent charge; CCA rating aside, general voltages/Amp hour measurements.

U can have a draw on the system which is causing the battery to drain. This can be tested w the key off and an amp probe. I would hope you dont see much over 15-20mA maximum.

Without a charging system and only running on battery power(which your bike didn't have enough of to start by cranking) I would expect to see the headlights dim after ten minutes and bike to cut out shortly thereafter if it makes it that far.


And Teela's bike failed outright, it was a failure not a weakened problem.
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Old 07-19-2009, 11:54 AM   #13
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Quote:
Originally Posted by 1slocbr View Post
Im still saying its the stator. Its the only component to the charging system. Rectafier only regulates voltage.
The rectafier converts the alternating current into direct current.

If can prevent the voltages from the stator to charge the battery at its full potential so it can be the reason for failure as well due to a weakened system.


At the rectifier, backprobe or disconnect the three wires from the stator and check w a DVOM, fused AC connection. 180 plus should be seen in AC. If that is present the brushes and output from the coil of the stator is good.

Put one wire of the DVOM on the output of the positive wire at the rectifier and the other at the power side of the post of the battery in DC mode to check for voltage drop. This can also be dont on the post and the terminal of the battery cable to check for voltage drop due to resistance across the battery post terminals. Both can cause poor charging of the bike.
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Old 07-19-2009, 11:58 AM   #14
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Ah , another $150 down the drain. That link is awesome. I appreciate your help.

Do I have to replace that stator cover Gasket too after replacing the generator?
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Old 07-19-2009, 12:02 PM   #15
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there are two parts to a battery...
The state of charge- means that the battery will charge
The state of health- means it will hold a charge.
If you are unsure of the health. take it to a dealer and they should be able to check it for you.
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Old 07-19-2009, 12:36 PM   #16
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So even though this battery is new, it could still be faulty. Damnit I just spend $65 dollars on this battery!

CaligoneTX, I guess you may be right because after I bought that battery, I rode the bike from Katy to Conroe and Conroe to Katy. I had to push start in between those 2 trips. The battery wouldve never lasted through both of those trips by itself if the stator was bad.
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Old 07-19-2009, 01:00 PM   #17
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Warranty? You should be able to exchange it.
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Old 07-19-2009, 01:35 PM   #18
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Yes, I have warranty. I'll try the battery route first. If it still dies... I have a reason to believe its the rectifier...

... because I think its undercharging the battery. Given that its hot as in Houston and the rectifier is located right behind my radiator, it may be that the heat has somehow damaged my rectifier.

I just hope it doesn't come down to being the stator bc that will hurt my wallet.
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Old 07-19-2009, 02:28 PM   #19
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Old 07-19-2009, 02:33 PM   #20
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Quote:
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tsk tsk tsk
hahaha I did the test and it died when I pulled the pos cable. Alot of things aren't making any sense to me so I just want to be sure. I'm not doubting you. I just don't want to waste $150-180 bucks on a little part that doesn't fix the problem.
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