This is going to be hard to believe.
Here's my problem: Roughly 10 to 15 minutes after I start my car and start driving the headlights and the dashboard lights start dimming and/or flickering and the battery warning light follows soon after. If I don't stop driving, the airbag warning light will then come on and within a few minutes, the car loses all forms of electrical power. Now for the fun part: the engine keeps on running but there's no reason to continue driving when the lights, the wipers, the radio nothing works. It will need to be jump started but will only function normally for 20 minutes or so.