How do I tell if my battery is bad?

Vehicle batteries are fully charged at 12.7 volts. They can read a little higher if they have been recently charged. The first step on a maintenance free battery is checking the eye on the battery to see if it is green. If it is clear or black, your battery is not healthy. The second step is to check it's voltage. You can do this with a voltmeter or a multi-meter. Put the red lead to the positive post and the black lead to the negative post on the battery. (On most multi-meters turn the dial two to the left from the noon position for the correct range.) If it displays below 12.5 your battery needs a charge at the least. The third step is to apply a load test. If you don't have a load tester,

Featured Posts
Recent Posts
Archive
Follow Us
  • Facebook Basic Square
  • Google+ Basic Square