SOHC.co.uk Forums > CB500/550

550F charge issue?

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Davelu88:
Hi all , when checking over my bike I tested the battery with my multi meter, the battery was 11.84v with the bike off . With it switched on it dropped to 11.45v and with it started and revving it rose to 11.49v . I put the battery on my other F1 and when revved it rose to nearly 12.8 v . Does anyone think I have a charging issue 🤔

Sesman:
Yes, absolutely.

Davelu88:
Any ideas on what to check first, bearing in mind that I am electrical challenged although I can swap out some parts from my other one to check , eg rectifier etc .

Sesman:
Obviously carry out a visual check of all connections and joints, especially earth connections. You can check the alternator with your multimeter set on AC. Suggest you have a peep in Aladdin’s cave at the workshop manual….excellent guide in there. And yes of course, swapping out components is a quick dodge.

Sesman:
Manual page 94….

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