DEAD Battery What the??? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 15 (permalink) Old 10-26-2008, 11:47 PM Thread Starter
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DEAD Battery What the???

So my daughter and I went on an evening ride Saturday with all systems normal. Went to start it Sunday and the nice expensive MF battery is dead.

Volt meter read 13+ volts so I'm guessing the charging system was working.

Any ideas folks? I didn't get a chance to look at it today because I took out my GL500 on a beautiful fall ride.

DT

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post #2 of 15 (permalink) Old 10-27-2008, 05:10 AM
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YOU have 13 volts at the battery??? If I am reading that right, then i would say check into loose connections, and bad grounds....
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post #3 of 15 (permalink) Old 10-27-2008, 06:40 AM
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Quote:
Originally Posted by slimvulcanrider View Post
YOU have 13 volts at the battery??? If I am reading that right, then i would say check into loose connections, and bad grounds....
X2
Sounds like something loose, somewhere.


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post #4 of 15 (permalink) Old 10-27-2008, 07:07 AM
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X3 13 volts is more than enough to get you going.

C
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post #5 of 15 (permalink) Old 10-27-2008, 07:14 AM
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I think they meant while riding thet were getting at least 13 volts. but even so a loose connection somewhere is a good suspect. i have a fan that runs off a switch for now. that will kill a battery quick. maybe some accessories are to blame
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post #6 of 15 (permalink) Old 10-27-2008, 07:45 AM
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I think they meant while riding thet were getting at least 13 volts. but even so a loose connection somewhere is a good suspect. i have a fan that runs off a switch for now. that will kill a battery quick. maybe some accessories are to blame
I agree. I read that sentence and thought it to mean that during the ride just before the break-down his mounted volt meter showed all was well, and I know he knows his way around his bike.

A connection; loose, corroded, melting, or a combination of...

Interesting we all look at the same post, but read something a little different.

Guess we wait for DT to return and clarify.
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post #7 of 15 (permalink) Old 10-27-2008, 08:02 AM Thread Starter
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13 + volts when riding the day before, and when I first turned the key on to start the next day the volts were 12.5 (I check every time before starting). When I kicked in the starter, the volts dropped, the relay clicked and the lights dimmed. The volt gauge dropped below 8 with the running lights barely visible.

I did get a chance to plug in a trickle charger - that showed full charge - but do you all think the battery is bad? My brother said a battery can have volts but not enough amps to start. It's not a year old so if I get a chance today, I'm taking it to SEARS for a load test.

My charger connects via pigtails behind the left side cover so I didn't check for loose connections.

Thanks all,

DT

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post #8 of 15 (permalink) Old 10-27-2008, 08:17 AM
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12.5v is almost normal, but a little on the low side (I've got a battery that's been slowly dropping - used to be 12.8/12.9, and now is 12.5 - 12.7v; definitely needs to be replaced). When you were riding, did the voltmeter ever get above 14v or did it always stay below that (13v+ but less than 14v)? If so, I'd be looking at the connections first, and then have the battery load-tested. As ryn has experienced with his charging system, 13.9 isn't quite enough to do the job.

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post #9 of 15 (permalink) Old 10-27-2008, 08:37 AM
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Quote:
Originally Posted by dirtrack650 View Post
I did get a chance to plug in a trickle charger - that showed full charge - but do you all think the battery is bad? My brother said a battery can have volts but not enough amps to start.
Yes, this is possible. Just experienced the same thing on my brothers bike. Volt meter showed enough volts to do the job, but then a load tester showed otherwise.

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Originally Posted by Crobins365 View Post
12.5v is almost normal, but a little on the low side (I've got a battery that's been slowly dropping - used to be 12.8/12.9, and now is 12.5 - 12.7v; definitely needs to be replaced). When you were riding, did the voltmeter ever get above 14v or did it always stay below that (13v+ but less than 14v)? If so, I'd be looking at the connections first, and then have the battery load-tested. As ryn has experienced with his charging system, 13.9 isn't quite enough to do the job.
Ditto.
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post #10 of 15 (permalink) Old 10-27-2008, 09:50 AM
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I have been having similar probs with my bike not starting...traced it back to a loose ground, and a loose connection on the starter relay.
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