BMW R1200R R1150R/T F800 K1200R R1100R/T R1250R RnineT Message Board

Don - WOW - I really appreciate the time and effort you put into your post. I measured the voltage by using a multi-meter and touching the positive and negative terminals with the probes from the meter. I'm getting 12.48 volts with the ignition turned off which sounds like a reasonable value. I have not added any additional electrical accessories to my stock 2008 R1200R so that eliminates one possible problem. The one thing I was wondering about is that when I turn on the ignition switch the red battery light is lit and stays lit until a couple of seconds after the engine starts. I'm wondering if the battery light being on until after the bike starts is an indication that there is not enough battery power to start the bike, even though the bike will start as long as the computer display stays lit. Can you check your bike to see if the red battery light remains on until after the bike starts?

I will let you know what I find out.

Bill

Both my current 2012 and the 2007 that preceded it did the same thing. Calling it a "battery light" is wrong, but often happens - usually since most of them have a battery on the light. It's actually a charge indicator showing the alternator is making more current then the bike is consuming. Right after startup the battery is somewhat depleted - so it's normal for the light to remain on a few seconds until things get to a more balanced state. A gentle rev of the engine by a few hundred RPM once the engine starts turns the light out. Normal. Absolutely normal.