I took my 1965 B40F out today. rode 4 miles to the nearby town, twenty minutes' shopping, then four miles back. Open roads, so reasonable speed. The ammeter was showing +2 or 3 amps throughout the ride. Would that be normal over that distance? Does the fact that it didn't return to zero mean the battery is not very good? (I charged it a week or two ago.) Or would it be normal over that distance to have that kind of reading for an okay battery? Phil.
I wouldn't trust the accuracy of the bike ammeter that much. As long as it is showing a positive charge then I would be happy!
Okay, thanks Adrian, my understanding was that the ammeter would slowly revert to zero when the battery was fully charged. Phil.