Dead 12 volt... Any way to charge it without jumping the car?

@MegWhitgal
I’m pretty sure I need a new battery. There haven’t been any issues like open doors, and it started showing signs for a few weeks (intermittently not recognizing keys, etc.). Plus, I think it’s the original battery, so it’s probably just time. It’s fine. If I don’t replace it now, it’ll probably be in the next few months anyway.