How To Check Car Battery Charge Level. To understand more check this video how to check car battery by voltmeter or multimeter 2. But when it reads 124 volts the battery has attained a 75 charge level and it could still be charged further there would be no danger.
Cannot reach higher than 105 volts when being charged then the battery has a dead cell. Id then check for parasitic leak. Fully charged according to the battery charger but the voltage is 124 or less the battery is sulfated.
If your multimeter is not autoranging set it to 20V DC.
At about 80 degrees a fully charged battery will be around 125-126 volts. If youre getting a reading with a minus in front of it -126 rather than 126 youve got the probes the wrong way round. The easiest way is to use a voltmeter. As long as the top of the battery is accessible you can carry out each step to check and refill the electrolyte with the battery still in your vehicle.
