How To Test Your Alternator And Battery. Why Is This Method Dangerous To Use. If the reading is lower than 12 volts check the alternator to determine if it is not fully charging the battery.

Signs of a Bad Alternator. There are a few ways to test this to verify a problem. For example you can.
Check twice to see if the car is in a stable position.
This video will teach you how to check the amps on your battery and will show you if the alternator is bad. How To Test An Alternator. Make sure your battery is fully charged. Set your multimeter to DC volts.
