How Do U Know When Your Car Battery Is Dead. If the dashboard lights are dim something is likely wrong with your battery. One day it starts fine then the next day it wont start at all.

What does dead car battery sound like. One day it starts fine then the next day it wont start at all. Heres how to test the alternator and see if the battery is bad.
In this case calling roadside assistance to get someone to come out to jump your dead car battery is a good option.
Then make sure these are all turned off and once again try to start the car. Ideally the specific gravity of the electrolyte is 126. First check the dashboard battery gauge. If there is any power left in the battery the warning lights on the dashboard should come on.

