Battery not charging at idle?
I drove my bike to work today for the first time. The battery on the bike was dead this morning so I jumped it and it rode just fine. When I got off work, the bike battery tried to start, fired up, and died. It then wouldn't turn over again, and the battery was dead.
I went and bought another battery, put it in, the bike fired right up and ran just fine. I drove it approximately 5 miles back home, averaging around 50mph in 3rd gear for a fair portion of the drive.
I went outside, and it fired up, but acted like the battery was low. About 10 minutes later I get to an intersection and the bike dies after I stop revving it. I back it into a parking lot, and another rider comes and helps me push start it.
When the battery is fully charged, it runs fine, but when it's low it acts like it's going to die unless I rev it up a bit. So as I'm pulling up to my house I let it idle with the clutch pulled in for a few seconds and gets fainter and fainter until it dies after a few seconds,
When I multimeter at the battery at idle, it comes out at 12.1v. When I rev it up to around 3-4k rpms the voltage jumps to 14.4.