How can you tell if the my car needs a battery or alternator replacement?

Recently, ALL the dashboard lights came on and the car wouldn't start after I turned it off. I can start it again after a few tries in 30 or so minutes.

Sounds like the alternator is bad; however, run the tests in the link below to be sure:

https://www.askmehelpdesk.com/cars-t...ml#post1973613

When all the lights on the dash light-up, it is normally a sign that the alternator is failing. Most likely, the alternator brushes have worn down too far and need replacing.