![]() If the measured value is more than the minimum value (around 12V) then it is certain that the battery has a good charge. In the image above, the reading is 12.78V, which is a good value for a one-year-old battery. This will wade off any sur face charge that it may have. Tip – It is a good idea to switch on your headlights for a few minutes before checking the battery. How to Use A Multimeter to Test a Car Battery In our case, we will select the 20V range as shown. ![]() The process is similar to what we did above, where you connect the test probes to the terminals of the battery and check the reading.īattery ratings change from car to car, but a good ballpark would be 15V to 20V DC. That is where our humble multimeter comes into the picture. How to Use A Multimeter To Test A Car BatteryĪ multimeter can also be used to test heavy-duty car batteries or alternators that may be giving you problems such as dim headlights or delayed ignition.Įven though you can check the health of your battery through the dashboard display, sometimes the battery charge can fully drain, leaving you no choice but to open the bonnet.
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