How to Check a Car Battery for Power

One of the best car maintenance tips is to know how to check car battery. Tough as it may seem, car batteries need to be checked once in a while. Here are the steps on how to check the power of your car battery.

Step 1 – Prepare the Car

Pop the hood and check if the terminals are not loosely connected to the battery. Battery will not charge properly if terminal connections are loose.

Step 2 – Test the Battery

Set the multi tester to DC (Direct Current). Connect the probes to the battery terminals. A typical car battery should have around 12 volts. If it is less than 11 volts, you may have a hard time starting your car, especially if you have a big engine. A battery with more than 13 volts may have a problem with the charging system.

Step 3 – Test the Alternator

Start the car and take note of the change in voltage. If you get a higher reading than the previous, the car is charging correctly.

Step 4 – Stress the Electrical System

Turn on the headlights, air conditioner, and radio. Check the reading of the multi tester. You should still get around 12 volts. If you have a lower reading, consider having your alternator checked, or replace it with another one with a higher amp rating.