Battery Voltage - Honda Motorcycles - FireBlades.org
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post #1 of 8 Old 10-27-2014, 3:36 PM Thread Starter
 
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Battery Voltage

Hey guys, I have an issue with my 05 cbr 1000.

I had what I thought was a dead battery but after riding it began working fine again. Anyways, I went out to try to start my bike and it acted like it had a dead battery. I checked the voltage and it rear 11.70 volts. When trying to start it it went down to between 4-6 volts. Is this a bad battery?

Last time I rode for about 45 minutes then was in stop and go traffic and when I went to restart it it acted like the battery was dead, but push starting it made it run fine. Dead cell or something else?
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post #2 of 8 Old 10-27-2014, 7:36 PM
 
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Re: Battery Voltage

Sounds like the battery doesn't want to hold a charge, throw a new battery in and see how you go from there.
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post #3 of 8 Old 10-27-2014, 10:36 PM Thread Starter
 
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Re: Battery Voltage

I dont know if its the battery since its almost a few months old, but ill take it in to replace it to see if that helps.
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post #4 of 8 Old 10-28-2014, 3:30 AM
 
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Re: Battery Voltage

Hi mate,

Check out my last posts "Drybo" Melted Stator Connector" I have a bit of experience with stators and regulator/rectifiers. I have a 99 Blade so not sure what a 05 has. However if it has a regulator/rectifier this is what passes the charge to the battery. If it is faulty no charge and intermittent ignition. Go on you tube and search for "testing rectifier/regulator and stator" make sure you have a multi meter.

I had the same issue now resolved. I replaced the R/R and stator, when you test you will find out which is faulty. Don't by a new battery as you may be able to re charge it. I have been advised that batteries need conditioning, a 3 stage charger will reset the battery to full then trickle. Get a charger that has a quick connector so don't have to take your seat off. The cable comes of the terminals and can be placed at rear of bike and then just plug in the charger. Easy.

Good luck

Drybo
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post #5 of 8 Old 10-28-2014, 3:07 PM
 
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Re: Battery Voltage

My thoughts are about your battery and your charging system. I suspect your charging system, but I don't know if you have a quality battery. Batteries can have a failure rate as high as 10% or more depending on the brand.

Assuming you have a quality battery, that hasn't failed, then your charging system is the next thing to check.
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post #6 of 8 Old 10-29-2014, 11:33 PM Thread Starter
 
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Re: Battery Voltage

Well I had the battery place do a full charge on my battery and got it to 13.3 volts, I installed and rode for about 2 hours, came back home and charge was reading 13.29v. So I'm assuming the battery just was dying and needed a full tendered charge.
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post #7 of 8 Old 10-29-2014, 11:54 PM
 
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Re: Battery Voltage

Did you check the voltage at the battery terminals with the engine running? If your alternator and voltage regulator are working properly, it should be between 13.5 V and 14.5 V at 3,000 RPMs.
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post #8 of 8 Old 10-30-2014, 4:50 PM Thread Starter
 
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Re: Battery Voltage

I haven't checked that with the full battery but it did raise when when I held the throttle around 4k with the battery when it was at 11.70 volts. I also took off one of my ballasts that was flickering, i think that was a part of the issue.
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