bb 9900 charging solution

Sudden death blackberry 9900. cara flash bb bold 9900 My blackberry 9900 battery shows a red x when i try and charge it. rapido bb 9930 does this mean the battery is ready to be replaced? Blackberry storm 9530 phone stopped working it shows a white screen with battery and red line across it what could be the problem? Blackberry 9900 wont turn on