sdpatt
Sr. SHO Engr.
Luigisho said it well regarding the failure rates of the alternator and starter. I bought a remanufactured Ultima brand alternator from O'Reilly with a LLT warranty and have replaced it eight (8) times over the years. Some of the outside-of-USA remans have lasted only days.
A new battery is a good idea for your situation when you install a "good" alternator since it has been overcharged.
A new battery is a good idea for your situation when you install a "good" alternator since it has been overcharged.