Question about 2000 Honda CBR 929 RR Fireblade

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Battery wont hold a charge. put new battery same problem. when i recharge it battery is drained after roughly 5 starts.

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  • yadayada
    yadayada May 11, 2010

    what is the charging sytem voltage at 2000 rpm?



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Stator needs to be replaced, works just like a alternator, if you ever banged it or dropped the bike then you have a busted stator. easy to fix but might run you about $70-$90 bucks for a new one.

Posted on Sep 12, 2009

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How low does the battery voltage get? lower than 12v? True a dropped bike will smack the polarity out of the stator, but it would have to be a pretty hard fall. What really keeps a bike charged is the voltage regulator...are the connections hooked up correcly, my connector on my cbr was found smoked/chared and had to be replaced..i did "All" the voltage checks on my stator windings, regulator, pulse generator, spark unit, etc and everything checked out good...but it doesn't mean that my stator is going could be...but once i changed my regulator, and preformed the test at 4000 rpm i saw it go up to 15v then regulate down to 13.5v like it should...but every day for a week, i checked the voltage and its seems to be holding at about 12.6v which i read was sufficient to start my bike.I also found corrosion on my battery terminals and cleaned them up real good. it could be a stator coil going bad but the odds are to great, i think. Get access to your battery and start the bike for a couple minutes and turn on everything you can: high beams etc.then turn off the bike and then look at the voltage readings it a lot lower than usual! then maybe you do have a stator going bad. Also hook up a meter across you battery before and after start the bike and watch to see if it drops drastically. One more thing to try..trickle charge your battery to the fullest set it in the bike and remove the ground ( be careful to make sure it doesnt contact anything metal) then let it sit for a couple days hook it back up and read the voltage..if it reads normal..then you"ve got a small leak in the system, and its draining the battery.

Posted on Sep 15, 2009

  • greg franciscus
    greg franciscus Dec 14, 2013

    thanks very much i will do the check



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