If a cell is still faulty it probably has been damaged by sulfation.
Fix car battery dead cell.
Recharge the battery and test it again.
Knowing how to fix a car battery effectively may increase that number.
2 1 you will need the following.
The best method to test a car battery for a dead cell is to check the specific gravity of the electrolyte fluid.
Once a cell goes dead the battery is bad and must be replaced.
The normal life span of a car battery is about 4 years.
Most of the car shops who buy supposedly dead car batteries take them at a lower price then refurbish them and sell them at a higher price.
A fully charged battery has a specific gravity of 1 265 and no cell should differ by more than 0 05.
A battery is charged continually by the.
1 the symptoms of a soon to be dead car battery.
When one or more of the cells fails the battery is incapable of producing the needed amperage to start the vehicle to get you to work in the morning.
0 1 how to fix a dead cell in a car battery.
2 reconditioning or refurbishing a dead cell.
If you own a fairly good quality lead acid battery you can use the acid and water method several times but after some time a process known as sulfation kicks in.
Reconditioning a dead cell of a car battery is entirely a thrifty way to save the car battery and prolong its life for another few years.
Add acid to any cell below the minimum specific gravity following the manufacturer s instructions.
The batteries used in cars contain six separate cells.
A typical 12 volt car battery is composed of six cells that chemically produce voltage and amperage to start your car.
Sulfation and car battery redundancy.