The alternator is one of the necessary parts for the car to work well, and its task is to generate electric power and recharge the car battery again, and in the event of any malfunctions, this leads to a complete paralysis in the car.
The car alternator stopping charging the battery is one of the most common defects in this part of the car, but how can this be discovered, this is what we will address through the following lines
Car alternator test steps:
- First we set the voltmeter to measure 20 volts
- In the next step, we put the two fingers of the red multimeter in the positive battery electrode and the black one in the negative battery electrode as in the following picture
- If you notice that there is a battery measurement of about 12 volts, this indicates that the car battery is well charged without the engine running.
- We leave things as they are and start the engine, then we start measuring the battery voltage again as we did in the previous step, but this time the engine must be running, meaning that the alternator is charging, and here there must be a change in the battery voltage so that it must rise And the number that should be in the car battery when the engine is running is not less than 13 volts, and this means that the charging of the alternator is average, but in the case if the battery voltage is 14 volts or higher, this means that the alternator is working well and this picture is after the engine is running and working alternator with battery in good condition.
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