I think your battery is deed. How long did you left it uncharged? You may try to do trick with directly connecting the battery to some ac adapter pin 1 + pin 6 - (the upper pin near camera is the pin 1). Use about 4 - 6 V on battery from ac adapter for about 15 - 25 sec (warning do not hold it to long like that coz it may make battery explode). Try that few times. After that put the battery back in the phone and try to charge it now. I hope this helps.