6649 Views 1 Reply Latest reply: Jan 25, 2010 11:23 PM by Graham K. Rogers
Hi, Hippyremix, welcome to the forums. First off, you may indeed have a dying battery which is why it was on eBay to start with. If this shows 20% is that an estimate of yours or is that displayed as it was not until the 3Gs that percentages were available. Of course, you may have bought a jail-broken iPhone; and as you have replaced some parts, warranties will probably no longer apply.
It may also be that the battery is not calibrated. You say you connect via USB and there is a problem with charging: if the USB port carries insufficient power, that will not charge the iPhone. Best, if you do not know (like a keyboard USB port) is to use a USB port in the back of the computer --which do you have by the way? -- or a charger that goes in a mains socket.
To calibrate when you have a working charge system, run the battery down until the phone goes off completely, then recharge completely. If this is not working for you, then a replacement battery may be needed.