It's hard to be sure without testing. If you have a digital multimeter, place the leads across the battery posts, everything turned off. The generic spec for a full charge is 12.6 volts. If you leave the leads hooked up, have helper turn key to crank, the reading shouldn't drop below about 9.6, if the reading drops way down, you need to have the battery tested. Some of the national brand autostores will check the battery for you. You have to start with the battery, you can't test anything without proper voltage.
Tuesday, April 6th, 2010 AT 9:50 AM