Do I need a new car battery?

I was driving home from work last night in my 01 Ford Tauras. I was maybe 5 minutes from home when my headlights went full and were flashing. My blinkers were full and were faster than normal. When I came to a stop the car had almost died when I accelerated. My question is that is there something severely wrong with my car or do I just need a new battery?

Read more: Do I need a new car battery?