How To Test 12v Car Battery. Video tutorial on how to determine if the battery in your vehicle is still good by doing a load test. Turn off the ignition and any accessories like lights or the radio in the vehicle.
When you start your car your batterys voltage will drop for a short time before climbing back up to. The batterys voltage shouldnt reduce. Apply a load that is equal to ½ of the CCA specification of your car for 15 seconds.
If you are wondering how to test motorcycle battery just follow the same process of measuring the car battery.
Turn the vehicles key to the run position and check the multimeter. At 124 volts a car battery is 75 charged while at 122 volts its 50 charged. At about 80 degrees a fully charged battery will be around 125-126 volts. 2 A and the car is running fine but next week I intend to buy the new 12v battery.
