Yes, I am wondering if I should change my battery...
I use the 9210 a lot.
Usually 1 up to 2 hours talking per day.
I use with cover opened (running Active Desk, Messaging, Calendar, Contacts) 2 or 3 hours.(Max Brightness)
In the evening 30 minutes up to 45 until I get asleeped.
Battery life is never longer than 2 days. (better charge it everyday not to be surprused)
Should I change the battery or this is normal?
{I read threads about battery life but none about device ussage}