[Aka]

My Dad just told me he'd bought a new battery last year, and that it's an Optima like mine. Which reminded me of when my car's alternator was dying. It did similar dash things, though, no where NEAR as often. Once or twice lights lit up on it, and twice it died. The car probably ran for a month off the battery and 8 volts off the alternator. It did start to get sluggish, and then eventually wouldn't start.

Difference between his symptoms and mine, his occur much more frequently, affect more of the car, and his has continued to start for much longer.

But it's starting to idle weird, and even drive weird, accelerate/slow down while you maintain constant pressure on the pedal.

I think you guys must be right.