I've had my bb since about FEB, I have a sleep case and power it down at night and have it go on at a certain time in the AM. Last night I had charged it, it was 100% and used it for a few hrs today and believe me, certainly not enough time for it to go down to 20%. Do you think I should fully power it down at night and turn it on manually or could some other condition exist? I did buy another battery from blackberry.com so, I still have that one. Any answers or help would really be appreciated. This is the second day it has happened. Coindicentally, it only happens on the original bb battery, not the back up one I bought.