Car Battery Voltage Chart

The chart is listed below.

Car battery voltage chart. With the engine off you should get a reading of 12 6 volts. Regular testing of electrical systems and batteries is a part of. 12v car battery voltage chart the average duration a car battery can last is 4 to 5 years or even 3 years in hot climates such as arizona and florida. Battery voltage state of charge table.

Then the voltage of the battery is measured under a load similar to what it takes to start your car. I put together the following battery state of charge chart which indicates the state of charge percent as it relates to battery voltage or specific gravity. The figures are based on open circuit readings. Before you do this test yourmechanic will test the car battery to be sure that it has at least a 75 charge.

This is intended as a guide only as the voltage reading will be effected by the battery age technology and temperature. Therefore if your battery is more than 4 years old and car battery voltage drops quickly it is possible it has reached the peak of its useful service life and requires replacement especially if. Car battery voltage chart the above chart gives an indication of what the voltage should be at different states of charge and operating conditions. It s important to test your battery and electrical system regularly not just when it s starting to show signs of weakness.

Voltages and specific gravity are listed for a 6 volt or 12 volt battery and battery banks of 24 and 48 volts. So how many volts is a car battery the straightforward answer is. This type of car battery test measures the ability of the battery to produce current. Most retailers offer a simple free five minute battery test.

But first a few important notes and caveats. If the voltage falls below 12 4 v the battery should be recharged as soon as possible. That is when the deep cycle battery isn t under load and hasn t been under load for a few hours. Proactively testing it or making sure your mechanic does twice a year will help reduce your chances of failure.

The table below shows the voltage and approximate state of charge for each type of battery. A perfect voltage with the engine running is between 13 7 and 14 7v. But the voltage is not a fixed number. Average car battery voltage is 12 volt dc batteries.

The ideal car battery voltage range will provide you with a relevant interval according to which you can measure precisely what the voltage says about the battery s current charge. Car battery testing voltage. In an ideal case an open circuit voltage of about 12 8 v is measured with a multimeter. Dead 12 volt battery of voltage range is it dead as a car battery.