Since the battery is new, I want you to do me a favor and check alternator output. It isn't hard to do at all. Follow this link:
https://www.2carpros.com/articles/how-to-check-a-car-alternator
Also, there really isn't one component that will shut it down, allow you to disconnect the battery, and then start three more times. Make sure the battery terminals are clean and tight. Also, make sure they are not damaged. When I say clean and tight, make sure where the terminal and post meet, there is no corrosion. The battery should be clean since it is new, but the posts may not be.
Here is a link that shows how to use a voltmeter that will be needed for the alternator test:
https://www.2carpros.com/articles/how-to-use-a-voltmeter
Let me know what you find.
Joe
Wednesday, April 24th, 2019 AT 6:22 PM