How to turn on a blackberry with battery error (red X)

If you can't turn on your Blackberry and it shows that it has a battery error , this is how you troubleshoot it::

Remove the battery, press and hold power button and reconnect the battery, keep holding the power button until the loading bar is at halfway than release the button.If you still showing battery error after this , try one more time.
PS: Make sure you press the power button before you reconnect the battery.

If works ,say thank you Ninja!