A couple of days ago, I moved the black Q to the driveway to wash and charge the battery as it hasn't moved in a couple of weeks. The voltage guage was only reading about 12 volts. Hmmm. So I was wondering if the alternator was going out. I put the voltage meter to the two exposed terminals and the guage read out 13.8 volts. So no problem there. Any ideas why the guage is reading low?