Name:   Shortbus - Subject:   Volt meter reading Date:   5/4/2015 5:26:17 PM (updated 5/4/2015 5:28:24 PM)

Get a portable voltmeter and read across the battery with motor running.

  Even 15 volts will boil a battery dry if the hydrogen doesn't explode first.

Tap the gauge.  Anything much over 14.4 volts is a problem.

Hi volts will be an alternator regulator problem.  Get it fixed now.