Hopefully someone can help.....have Acura RDX 2007 with 130,000 miles last week after sitting for two days battery dead....got jumped and went to mechanic. They placed a new battery and let car sit for two days.....retested and alternator bad....mind u just had a new alternator put in 6 months ago....replaced alternator for free and left new battery in car....as I was driving home my check charging system light kept popping on when I would hit the brakes and then go right off.....took it back to mechanic everything checked out fine but light keeps flickering on.....no error codes showing. What to do now?

 

Checkout battery cables

 

Thank u for response.....Done no issues