I'd use a digital multimeter and do some testing. With the meter leads across the battery posts, 12.6 volts is a generic spec for full charge. If the battery is down, take it off and get it charged. Make sure all battery connections are good. Then, with engine running, take a second reading across the battery posts. The second reading should be higher than the first, if the charging system is working.
Monday, April 5th, 2010 AT 9:52 AM