Time for a New Battery? - Wrist Twisters
 
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post #1 of 19 Old 11-22-2008, 11:08 AM Thread Starter
 
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Time for a New Battery?

Niner lives outside. Always start right up, less than a half second. This morning started right up then died about 40 seconds later. Tried again and got the dreaded click. Had a neighbor push start me, fired right up, rode about two miles. Went to start again, not even a click, faint fuel pump. Checked connections, all satisfactory. Battery is five years old, never once let me down.

No prior symptoms, should be the battery. Thoughts? Advice.

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post #2 of 19 Old 11-22-2008, 11:33 AM
 
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Or the alternator.

I'd charge up the battery, start the bike, then disconnect the Black lead from the battery. Bike should keep running if the alternator is charging properly.

Are you sure all the connections are good?

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post #3 of 19 Old 11-22-2008, 11:35 AM
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Quote:
Originally Posted by dog512 View Post
Battery is five years old, never once let me down.
can't say that no more.... buy a new one...



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post #4 of 19 Old 11-22-2008, 11:42 AM Thread Starter
 
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got that right.

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post #5 of 19 Old 11-22-2008, 05:33 PM
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Purchased a 2003 919 about 5 months ago and I just went through this. Bear in mind, this is my first motorcycle in over 2 decades, so maybe somebody else can confirm/reject what I am saying.

I went strictly by the manual. I removed the battery, checked voltage (digital multimeter-a must for the amateur garage), got 12.1 volts. Trickle charged for a couple of hours and that only got me to 12.3 volts. Performed the current leak test as described in the manual and got 1.1 mA. Went ahead and bought a new battery.

Again, this is the "newbie by the book" experience. Would love to know more.

Best of luck.

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post #6 of 19 Old 11-22-2008, 05:47 PM
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Mine's been in the garage for 2.5 months now

Went out to start her up today, and she wouldn't...

Push started her and the third try was the charm

2 > 4
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post #7 of 19 Old 11-22-2008, 06:30 PM
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Two words, batteryjack.com $37 for the same thing Yuasa charges $150

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post #8 of 19 Old 11-22-2008, 06:45 PM
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Sounds like it is most likely the battery. Check the voltage with th e ignition on, but engine not running. Then check the voltage with it running. If the voltage is higher when its running, the alternator/regulator is ok, and its the battery.

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post #9 of 19 Old 11-22-2008, 08:26 PM
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The symptom you describe is not uncommon for AGM maintenance free type batteries: one day -- working perfectly, the next day -- nothing, or close to it. There is little or no warning of impending failure, though I've never heard a satisfactory explanation as to why.

Get a new Yuasa battery. There are two classes of battery for the 919 -- Yuasa for $100 or more, and everything else for about $50 or thereabouts. The Yuasa, if used every day or kept on a battery tender when not used for more than a month or so, will last a very long time. Mine is four years old and cranks the motor as vigorously today as it did the first time I installed it. All the other batteries will seem to be a little "hotter" for the length of the warranty plus several microseconds, then suddenly quit with astonishing abruptness. I've seen and heard of this far too often to attribute it to coincidince. If you intend to sell it then put the cheapest battery you can find in it and kiss it goodbye, but if you're on it for the long haul get the best, maintain it properly, and know you can trust it.
Just my

Rob

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post #10 of 19 Old 11-23-2008, 01:38 AM Thread Starter
 
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That is my intention. Reliability is key. One of the reasons I got the "niner.

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post #11 of 19 Old 11-23-2008, 06:31 AM
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I have ben very happy with my OptiMate 3..

http://www.smartchargers.com/

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post #12 of 19 Old 11-24-2008, 07:00 AM
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Yuasa.

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post #13 of 19 Old 11-25-2008, 07:02 AM
 
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i,m having the same problem , i jump started my bike then when i removed the black lead from the battery my bike died , is that a bad alternator or what. i love my 07 919 ,shes not running, gotta think fast.

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post #14 of 19 Old 11-25-2008, 07:11 AM
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Quote:
Originally Posted by samonte919 View Post
i,m having the same problem , i jump started my bike then when i removed the black lead from the battery my bike died , is that a bad alternator or what. i love my 07 919 ,shes not running, gotta think fast.
that is a "classic" sign of a alternator not working in a automobile.. you should take it to the dealer and let them test it.. it should be still in warranty... but hurry



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post #15 of 19 Old 11-25-2008, 07:19 AM
 
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im going this morning thanks

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post #16 of 19 Old 11-25-2008, 07:51 AM
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I'm not convinced the 919 will run once the black lead (+) is removed from the battery. Please chime in of you have actually done this test and the bike continued to run.

My charging system test is to start the bike, throttle up to 5,000 RPM's, the battery terminal voltage should be around 15.5 volts. If a voltmeter is not available look at the headlight at idle. As you wick up the RPM's to 5,000 the headlight should get brighter.

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post #17 of 19 Old 11-25-2008, 09:24 AM
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Lots of car and motorcycles will not run with one of the cables removed. The battery is used as a fliter to remove noise from the DC voltage produced by the alt. Additionaly you can damage voltage regulators. May advive is don't do it. Good luck.

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post #18 of 19 Old 11-25-2008, 01:13 PM
 
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just got back from honda. my battery was shot. got a new one under warranty. had to wait three hours which sucked but it was free. thanks for all the advice people.

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post #19 of 19 Old 11-25-2008, 01:21 PM
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n/p and welcome... stick around you'll find were a helpfull bunch... if not helpfull at least we are sarcastic and funny and pains in the butt...



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