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Old 11-12-2012, 03:01 PM   #1
vodkamune
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Question Battery Discharging

Hello Guys.

Few quick questions in regards to the battery in a f4 brutale

I have a 2005 F4 Brutale and i dont know if its a common problem or this has to do with the main wiring in the bike. But my battery discharges over a few days of not riding. I do have a Battery tender for the bike. Does this mean i have to have it always tendered?

If you guys know anything more in regards to this it would be great.

Hate the part of doing a roll start everytime the battery dies
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Old 11-12-2012, 03:48 PM   #2
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If it is the original battery, it is time for a replacement.
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Old 11-12-2012, 04:00 PM   #3
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Ok well i hope thats the case. I know that the alternator works do to when i rev the front light dims in and out. So there is no problem with that.

But over all did anyone have the problem with new battery's on the bike
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Old 11-12-2012, 04:28 PM   #4
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Originally Posted by silentservice703 View Post
If it is the original battery, it is time for a replacement.
+1

I'm fortunate in being able to ride my Brutale at least 4-5 times per week and have never used a battery tender. I have just placed the battery after 4 years.
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Old 11-12-2012, 05:08 PM   #5
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Wink ?

vodkamune;
what is the voltage measured across the battery terminals at 2,000 RPM?

does the red charging light come on, when the headlight dims?
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Old 11-13-2012, 11:03 AM   #6
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Quote:
Originally Posted by vodkamune View Post
Ok well i hope thats the case. I know that the alternator works do to when i rev the front light dims in and out. So there is no problem with that.

But over all did anyone have the problem with new battery's on the bike

This is a 7 year old bike...have you replaced the battery?

The new bikes come with KOYO batteries, which are junk. The Yuasa you have has done yeoman's duty if it is the original.
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Old 11-13-2012, 04:05 PM   #7
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+1
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Old 11-13-2012, 10:25 PM   #8
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Quote:
Originally Posted by silentservice703 View Post
The Yuasa you have has done yeoman's duty if it is the original.
I have an 07F4 that had the same issue, slow to start, run out of juice after a day or three, eventually the fuel pump didn't have enough juice and was blowing fuses after a mile or so. I had to push the bike home one day. I thought I had electrical problems, oh shit
Switched out the Yuasa for a new Lithium ion job, and its been like a new bike ever since. Starts like a dream. No need for a tender, not a single fuse pop, no dimming headlight.... And you save about three pounds from the stock unit. Add up the cost of carbon and titanium to get comparable weight savings.
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Old 11-14-2012, 11:07 AM   #9
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Wink ?

again, vodkamune;
what is the voltage measured across the battery terminals at 2,000 RPM?

putting new battery in it won't help if the charging system isn't doing it job

leave the battery on a charger for a couple of days then measure the voltage

have the battery load tested
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Old 11-14-2012, 08:29 PM   #10
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Quote:
Originally Posted by theknurl View Post
again, vodkamune;
what is the voltage measured across the battery terminals at 2,000 RPM?

putting new battery in it won't help if the charging system isn't doing it job

leave the battery on a charger for a couple of days then measure the voltage

have the battery load tested
I dont have a problem with the charge the red battery light does not light up. And the battery is getting power charge back i can see it with the head light flickering when i rev the engine

so i guess you guys might be right with the battery crapping out on me ... well i am planning to do a full maintenance on the bike ... so pro be a good start to get the electrical cleaned up.
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