My iphone will not turn off and i think i know why

My iphone 4s has been having this problem, it will not turn off (slide to power off, seconds later it restarts) and the battery is draining like crazy. After some thinking i think its something with a stuck pin and it is searching for a cabel plugged in constantly. I have restored and blown out the port and all that. But does anyone know of any way to fix this quick, i am going camping again and i will have no power so i need to be able to turn it off and have battery