Will this work on car batteries?

Great Question! Yes, the GB500 absolutely will work for automobiles. Although, this model is designed for very Heavy Duty applications, including 24 volts. If you do use it on automobiles, you will want to make sure you leave it in the 12 Volt position.

If you are only looking to use it for automotive applications, you can save some money and get the:

GB150

GB70