IPhone :: 3G Not Charging Or Being Recognized By PC

I have a major problem which is scaring me. I recently bought a 3G Iphone from a friend who got a 3GS for christmas. I updated to 3.1.2, jailbroke it, and it's running fine. I have been using it for 1 month now with no issues.

Today I got home to something sad, my phone is currently turned off at 16% battery life. I am unable to charge the phone through my PC, or a wall. I have tried hard reset (holding home and top for 10sec), tried soft reset. Tried multiple PC's in the house, and a Laptop, Tried diff cords. I even tried a "trick" where you press mute on and off 4 times then hold power and home. Still nothing worked. What is unfortunate is that I cannot even get it to be recognized by the PC at all to restore it if this is a software issue. After lots of research im stuck and need some help -_-. The thing is after leaving the gym this morning I decided to listen to music on my Iphone which I always do in the car (I have a USB hooked up to my screen in the car so I can use it to listen to music). Everything worked fine the cord recognized my phone as always. Unfortunatley this never has charged the phone... It says "this accessory isn't made for this product" but still, I am able to pick songs from the screen.

anyways that's just to let you know that the phone is recognized by some plugs, but all the USB plugs in my house, which normally charge the phone are not. So the bottom line is, my phone is at 14% right now turned off. If anybody knows a fix to this or knows if there is anything I can do with SSH (which I luckily have installed on the phone at this time)