I think my car battery is dead for some reason. I went on a week long trip and came home to find that my car wouldn't start, so I jumped it and let it run for 10 min or so. After that I turned it off and tried to start it again, but it wouldn't so I tried to jump it again, but it wouldn't jump. Does anyone know what is wrong? Should I buy a new battery, if so which one would be good?