Bought an AC Delco 34PGHR 750 CCA 42 month battery from WorldPac in May 2018, and today it's showing a bad cell. I call them to see if they have that battery, but they say they don't carry it anymore. They would give me a 34PS 660 CCA 30 month battery instead. While I'm happy to get a new battery for free, I can't help feeling a bit screwed on the deal for getting a lesser battery. Thoughts?