| | Re: BB9900 keeps turning off
Sounds like either a bad charger and a dead battery, a bad battery, or both.
If you really need your device, my use a third party charger? Some can even damage the device if it doesn't have the proper specs and safeguards.
Does it charge when connected to the PC using Desktop Manager?
Solution: Get a real Blackberry charger made for your device and see if that fixes the problem. If not, get an OEM battery made for your device.