How To Check Battery Load Test. Place the red lead on the positive battery terminal indicated by a red cover or a symbol. Read Our In-Depth Guide Now.
If the battery fails the load test a second time. Test the battery voltage Turn off the ignition and any accessories like lights or the radio in the vehicle. Place the black lead on the negative.
Place the probe on the - terminal of the AGM battery on the end of the black wire.
In the prompted window type powercfg batteryreport or powercfg batteryreport output C battery-reporthtml and hit Enter to execute the command. If your multimeter is not autoranging set it to 20V DC. Test the battery voltage Turn off the ignition and any accessories like lights or the radio in the vehicle. A fully charged AGM battery has an output voltage of approximately 13 volts.
