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johnnyrod · 06-01-19, 03:01 PM

Connected a digi voltmeter to the battery and went for a ride to Tescos, about 5-6 miles away. Battery was about 12V, rising to 13.5V when running (though not at tickover). Was steady for the first few miles then started to drop, once below about 13V it started wandering all over the place from 12.8V to 11.5V. Was about 11.8V on tickover and went up to 12V when I turned the engine off. Coming back to the bike after shopping, did the same thing, ran at a steady 13.5V for a few miles then started dropping slowly then was all over the place. This matches the behaviour with the flickering headlights the other day - I can't go in the dark as I can't read the multimeter! Guess I'll be having a conversation with Electrex tomorrow.

06-01-19, 03:01 PM	#7
johnnyrod Member Mega Poster Join Date: Jul 2003 Location: Doncaster, oop norf Posts: 2,122	Re: Flickering headlights Connected a digi voltmeter to the battery and went for a ride to Tescos, about 5-6 miles away. Battery was about 12V, rising to 13.5V when running (though not at tickover). Was steady for the first few miles then started to drop, once below about 13V it started wandering all over the place from 12.8V to 11.5V. Was about 11.8V on tickover and went up to 12V when I turned the engine off. Coming back to the bike after shopping, did the same thing, ran at a steady 13.5V for a few miles then started dropping slowly then was all over the place. This matches the behaviour with the flickering headlights the other day - I can't go in the dark as I can't read the multimeter! Guess I'll be having a conversation with Electrex tomorrow.