Are you searching for topics related to how to test your car battery with a multimeter? If you are then you have come to the right place. At some point you may have tried to start your car only for the engine to fail to start, or maybe you realize the lights were flickering. Such problems may be caused by a faulty or flat/drained battery, and unless you know how to use a multimeter, you may end up wasting lots of time, effort as well as money finding the fault. So, how do you test the car battery?
1.Turn off the Engine
Fist begin by turning-off or shutting down the engine and letting it cool down. This allows the voltage as well as gases inside the battery to stabilize.
2.Disconnect the Battery’s Positive Terminal
When you look at the battery, you will notice two terminals connected to the car. One will be red in color and will be marked with a (+). This is the positive terminal. The other terminal known as the negative will feature a black cover and is marked (-). Disconnect the car wire connected to the positive/red terminal.
3. Select the Correct Setting
Most multimeters feature three jacks. NE will link to a red probe, the other to the black probe, while the other jack/hole will be indicated com. Select the Voltage(V) setting on the multimeter and make sure the red wire/probe is inserted into the red jack and black lead into the black jack. I always wipe and clean the battery to get a good contact.
4. Measure the Voltage
Connect the red lead from the multimeter to the battery’s positive and black lead to the batteries negative terminal. A good battery should read between 12.4 and 12.7 volts. Anything lower means the battery needs recharging while a value higher than 12.9volts signifies an overcharged battery.
The above are the simple steps to testing the battery. I can’t overemphasize the importance of safe working. Always, switch off the engine and disconnect the positive battery terminal first. Don’t work in a poorly ventilated environment or near flammable gases or materials. Also, use a high quality multimeter that meets the market standards. I believe the above article has certainly answered your question on ‘how to test your car battery with a multimeter’. There you have it, if you have any more questions on how to test a car battery with your multimeter – please contact me via the contact page.