How Do You Know If Its The Battery Or Alternator. Car Battery or Alternator. Batteries can die at any time but knowing the symptoms of what your car is exhibiting can help you prepare before youre left stranded.
When you start up your car look at your interior lights. An alternator for a newer vehicle can run 150 to 200. The alternator can drain a battery over time and shorten its lifespan and you dont want to unnecessarily run through batteries on account of a bad alternator.
If the alternator light which is sometimes identified as Charge doesnt come on the.
If your battery is good and your alternator isnt working the battery will still lose its charge because the alternator isnt keeping it charged. Once you know you have a good battery you can move on to testing charging system output. This means that your 12-volt battery can actually read as 132 volts instead of 12 when it is not fully charged. When you start up your car look at your interior lights.
