How To Read A Car Battery Gauge. Turn the vehicles key to the run position and check the multimeter. As the battery gains a charge the rate will diminish moving toward the green section of.

If your voltmeter occasionally reads less than 12 volts thats probably. Check the location of the gauge pointer in analog gauges. When you turn it on the needle on the meter will move.
Bought a brand new battery but still my electrical gauge reads only about a 14 output.
Then compare it to the voltage figures below. Depending on the settings made the needle can stabilize at 13 of the dial. Click to see full answer. Leave the car overnight and test before you start the car in the morning to get a really accurate gauge of the health of your battery.
