Looking to find how many volts a car battery has? A good car battery will have 12 Volts. If the battery has not been drained you can see by the voltage what is wrong with the battery in most cases.

If you test 11 volts for example, the battery is most likely discharged. Now, this is where things get odd. Car batteries fail in most cases when a cell in the battery gives out. There are (6) cells in each car battery. Each of the cells gives out (2) volts. So if you multiply 6x2=12. Six cells at two volts each is twelve volts. So if one cell goes bad in the battery, you will know if you test the battery at 10 volts.

This is an assistive way to trouble shoot your car battery. The best way to test is to first charge the car battery, and then conduct a CCA (Cold Cranking Amp) test. This is done with a automotive battery tester. You can take it to any mechanic and they should test it for free. Be careful as some dishonest mechanics will attempt to sell you a battery even if your battery is still good.

How Long Does It Take To Charge a Car Battery?

Great question! To charge a car battery it takes an average of 12 to 24 hours depending on what the output amps is from the charger. Lets break it down a little further.

There are a few different chargers that you can buy. The type you will need is will depend on the use you will purchase it for. The faster and more demanding charge will require a higher amp - like a 40 amp charger. If your battery is charged and will not be used frequently you can buy a lower amp charger (trickle charger) such as a 1 amp charger.

Hopefully that gives you some idea about how long it will take you to charge your battery.