Battery looses power extremely fast, and cant be recharged.
For some time ago my iPhone 3GS broke after using a cheap battery cover. It would loose power extremely fast and power off instantly if you used the dock connector.
I have now replaced the entire back, including the cover, dock connector, mic, speaker, buttons, battery etc.
The phone no longer powers off when using the dock connector, but the battery is still loosing power very fast.
Is it the logic board that's the cause? (that would make me sad)
Is this a good question?