I would like to know what kind of battery does Hyundai ship as OEM parts when we first buy the car. Mine's 2017 Elantra value edition. It has 640 CCA (cold cranking amps) with 100 minutes of RC (Reserve capacity). But when I search for replacement battery, every website out there suggests battery with 760 CCA and 120 RC. I bought mine used, and I'm unsure if the dealer sold me the car with wrong battery. Also, if someone has recently changed the battery, can you please suggest a good brand and the price? Thanks in advance.