2007 Hyundai Accent

For the past few days my battery and seat belt lights would flash every now
and then when I drive between 25-60MPH. If I was driving at night my lights
would flicker when the lights flashed.

Was just driving a friend home from work and noticed my lights were very
dim, not flickering at all, just dim. My seat belt and battery lights where off the
whole time. As soon as I turned onto his street the ABS lights and engine
light both turned on. Once we parked I shut off my car and tried to turn it on...
It won't start. the power will come on for a second but doesn't start. Don't
hear any clicking like it's trying to start. Please Help. Thanks