I have a 2007 Honda CRV and for the past year, it’s been struggling or failing to start if I don’t drive it at least every two days. I went to O’Reilly’s to get my battery & alternator tested and was told my battery wasn’t fully charged but good, but the alternator wasn’t charging the battery and that I need a new alternator. I left the battery for them to charge it in the store and when I picked it up a few hours later, the employee said it was charged up to 80% when he last checked on it, but it dropped down to 50% by the time I got there and although the battery test was still saying it was good, the loss of charge means it may go bad soon. My serpentine belt also is squeaking so I bought a new one but to change the alternator out, I would have to take the belt off anyway so I was thinking if needed, I should replace alternator and belt at the same time. Should I replace only belt or battery first and test again to see if alternator is good or replace all at the same time?