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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Troubleshooting (Poor Starting/Running/Handling/Ride Issues) » Archive through May 13, 2012 » Battery wont hold a charge? « Previous Next »

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Drucifer
Posted on Thursday, March 15, 2012 - 08:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
So, I just bought a 2000 Blast. I'm having an issue with battery drain. Replaced the battery and it just won't hold a charge. Multimeter says 12.3 to 13.6 while the engine is running. Got a spike to the 19 range. Runs fine once I get it running either by jumping it, pop starting it or hooking up a charger for a couple minutes.

I'm thinking voltage regulator / rectifier.

Anyone have any input?

Thanks!
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Froggy
Posted on Thursday, March 15, 2012 - 08:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
That spike to 19V indicated that your R/R is no longer functioning correctly. I would replace it.
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Reepicheep
Posted on Thursday, March 15, 2012 - 09:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
Agreed... a 19 V spike is either a bad voltage regulator, or a bad voltage regulator ground. And it will fry a new battery in short order.
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Buell_bert
Posted on Friday, March 16, 2012 - 08:10 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
I believe that the voltage should be 13.8-14.5 while the bike is running.
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Harleyelf
Posted on Friday, March 16, 2012 - 05:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
If you are lucky, the regulator or a ground connection is at fault. If not, your stator or its harness is shot.
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