Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums - View Single Post - Charging problem maybe?
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post #2 of (permalink) Old 08-04-2019, 01:57 PM
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The voltage levels don’t care about speed, it’s related to rpms so you can test it in neutral if you need to. Have you checked your stator and R/R? You can check the stator voltage outputs and also check resistance levels across the leads, and lastly make sure it’s not grounded out to the bike. There are similar tests for the R/R too (output and resistance across leads) but one thing you said was “newish” AGM battery, l learned the hard way, even though AGM is better than a wet cell, newish still don’t cut it, if you fully charge it and it maxes out at 12.6 with the bike off, that battery might be getting shot. But I’d focus on checking your charging system first because if it’s messed up it will continue to eat up batteries until it dies itself. All the measurement readings for the tests are on this site
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