So, I have a jailbroken 16Gig 3G-S with 3.1.2 firmware. I was checking a vmail, and noticed the phone had less than 10% battery left. Then I plugged it into one of those duracell portable AA battery supplies and it said this device is not compatible and asked if I wanted to enter airplane mode. Before I could hit 'NO', the phone turned off. Now, I can't get it to turn back on, and it doesn't appear to be recharging. I tried putting into restore mode and plugging into itunes, but it just won't turn back on. Any suggestions would be greatly appreciated.