How Do You Know When Car Battery Is Low. Troubleshoot a car battery without any tools. If your car battery is dying the first thing you may notice is your headlights arent as bright.
Maybe you need to buy a charger for the battery you already own. If your car wont start its often due to a malfunction of either the battery or the alternator. Either way check out this car battery guide that can help you figure out what is under your hood.
If you do youll find that your electronic systems start to shut down.
Up to 4 cash back A more helpful way to interpret that battery light is that its warning you that your car is running only on battery power. Fully batteries should measure at 126 volts or above. Maybe you need to buy a charger for the battery you already own. That said if you dont have a multimeter to tell you the voltage of your cars battery then you can do a test of your electrical system.
