I know this is an OLD thread, but for others that stumble across this, I wanted to clarify some info here. A charging voltage of 14.5v (with bike engine running faster than idle) is NOT too high. If the bike is revved to 4,000 to 5,000 rpm and the charging voltage is 14.8 or less, you are OKAY! If it is over 14.9v, you need to replace your regulator rectifier.

If your bike is putting out more than 14.4 volts AT IDLE, then you have a problem. Be suspicious of your regulator/rectifier (RR) as it should be 'regulating' the amount of volts getting sent to the battery and 14.4v or more AT IDLE is too much.

Guidance from http://www.motorcycleanchor.com/moto...lectrical.html
* "If the reading is 12.7 volts or lower at all times, then the charging system is not charging correctly (under-charging)."
* "If the reading is between 12.7 volts and 14.3 volts at all RPM's between idle & 5k RPM, the charging system is working correctly."
* "If the reading at idle is 14.4 volts or over, or the reading at any RPM is over 14.9 volts or higher, and the battery was fully charged before you put it into the bike, then the charging system is not charging correctly (over-charging)."

For what it is worth, I ran a Datel Voltmeter in my CBR929RR all the time. With no load and running at 5000rpm, the charging voltage was 14.6v and the bike was fine. If I turned on the high beams, the voltage dropped to 14.4v. If I plugged in my electric vest and gloves, the voltage dropped to 13.7v. So I can say from experience and use that a running/charging voltage (at 4 to 5K rpms) of 14.6 is FINE! No panic. No problem.
I hope this helps someone.