This video covers the essential steps to properly test a car's alternator and diagnose common alternator issues. The guide ...

Car batteries don't just die. Something is sucking up all its power. A parasitic draw test helps you find out which part is to blame.

A multimeter can be used to gather the same information found with a test light and then some. To test for power, start by selecting the appropriate setting on your multimeter.

When your car doesn’t start, often the battery is the culprit. Unfortunately, most vehicle owners do not check their battery until it fails. As preventative maintenance, the suggested best practice is ...

One of the simplest tasks a digital multimeter can perform is a basic voltage test on a car battery. Positive and negative terminals, hooked up to the car or not, will give a base number.

How To Test a Regulator-Rectifier A regulator-rectifier test can help determine whether the motorcycle’s battery and electrical systems receive the correct voltage and identify potential signs of ...

Specific Gravity Test (for lead-acid batteries): If you have a lead-acid battery with removable caps, you can check the specific gravity of the electrolyte using a hydrometer.