2004 Hyundai Sonata V6 Stalled wont start drains battery

I have a 2004 hyundai sonata that will not start. We have replaced the camshaft sensor, fuel pump, crankshaft sensor, the spark plugs get spark. Car will start but will not turnover, we know the battery is bad but even when attempting to jump the battery it does not start, when it stalled the check engine light came on but the battery drained pretty quickly after that. The fuel injector sensor works fine. Starter checked out as good. I don’t want to get a new battery if whatever is wrong with the car will make that battery go bad. No codes are being thrown. I’m at a lost of what to do. Help Please