My iPhone 3gs running firmware 4.3.2 randomly failed to charge. Two nights ago I plugged my iPhone into my wall charge for night. I got up the next day and it was at 15% battery. I had to drive that day so I put it into my car charger/radio station maker, and I turned on my music but when I got to where I was going it was dead. I then went home and left my phone on another wall charger (different charger and different wall) to see this symbol with an almost empty red blinking battery with an arrow outside of it pointing to a lightning bolt. I went out and then came home to find out it was so dead that it didn't even display anything when plugged in. I have tried putting it into recovery and DFU mode but still nothing. Much help is appreciated. Please I need help.