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New battery or worse?

 
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JimBo
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Joined: 18 Nov 2004
Posts: 5394

PostPosted: Sat May 25, 2013 2:37 pm    Post subject: New battery or worse? Reply with quote

I've decided to treat the old girl (the bike not the wife) to a new battery.
I've experienced rough running and sometimes a failure to even turn over.

However, on doing a test with my trusty meter I've found 12.4 volts at the battery with engine of.f
BUT, only 12.1 with the engine running at about 2000 rpm.

I'm fearing the worst with a reg/rec failure. Please tell me it isn't so! Crying or Very sad
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Tusky
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Joined: 12 May 2005
Posts: 11549

PostPosted: Sat May 25, 2013 8:34 pm    Post subject: Re: New battery or worse? Reply with quote

JimBo wrote:
I've decided to treat the old girl (the bike not the wife) to a new battery.
I've experienced rough running and sometimes a failure to even turn over.

However, on doing a test with my trusty meter I've found 12.4 volts at the battery with engine of.f
BUT, only 12.1 with the engine running at about 2000 rpm.

I'm fearing the worst with a reg/rec failure. Please tell me it isn't so! Crying or Very sad


Certainly sounds like it.. I would expect about 14v

The VTR had exactly the same symptoms, as V Twins take a bit of cranking but I was able to ride it all day with the light off and just charge from time to time.

On the bright side, at least it isn't frying your battery.

Keep your eye open for a second hand ventilated one on ebay.... Other option is that you can get new German ones (not OEM) for circa £50.00. I think Biggus has done this as well.
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JimBo
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Joined: 18 Nov 2004
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PostPosted: Wed May 29, 2013 6:51 am    Post subject: Reply with quote

I'm happy to report it was only the aged battery that let my beloved (bike not wife!) down.

Reading 12.8 idle and 13.8 active, lights on @ 5000rpm. Raptor workshop manual advises not less than 13.3 and not greater than 14.3, so how much more in the middle can you get than 13.8?

Very Happy Very Happy Very Happy
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biggus
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Joined: 21 Aug 2004
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Location: Hotel California

PostPosted: Wed May 29, 2013 7:16 am    Post subject: Reply with quote

Electrical issues on an Italian bike... I won't hear of it Wink Smile

Glad you've got it sorted old bean Very Happy
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