Friday, April 7, 2017

How To Use A Multimeter To Test A Car Battery Amps

Next turn off the ignition and lights. Test the cold cranking amps cca of a car battery with a multimeter in the above image the reading is 1473 which is also a good number for the cold cranking amps value.







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If you havent done so already turn your cars engine off.




How to use a multimeter to test a car battery amps.

Most multimeters have several functions so select the appropriate function on your multimeter.
Now that your multimeter is ready it is time to test your car battery.
Step 2 place the red multimeter lead on the red positive battery terminal and the black multimeter lead on the black negative battery terminal.




Set multimeter ensure the ignition lights and radio are off.
To test the car battery with a multimeter you need to have the engine turned off.
You can do this by checking the owners manual of your device.




If the initial reading is around 5v then your battery is working but is about to go bad.
If you dont know how to use a multimeter to test a car battery read the procedure below.
Turn the car off.




Put the red lead on the battery terminal marked red or positive.
Testing with your car running will affect the reading as the alternator interferes with the multimeter.
If the car is running when the battery is tested with a multimeter the charge from the powered alternator will skew proper readings.




Select the dc volts position on your multimeter or the 12v setting if you have a dedicated car battery test range.
Each multimeter models are built to handle a certain amount of current and the rating needs to be adequate to test your car battery.
The first step to check a car battery is to locate the battery.




Select the appropriate function on your multimeter.
Connect the red cable to the positive terminal on the battery and the black cable to the negative terminal on the battery.







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