Every connection you make with your Blackberry Smartphone will steal some of your battery juice, for instance Bluetooth connections use approx. 3 times the power of iRda connections, while WiFi will also juice your battery. If you don't use Bluetooth make sure your Bluetooth option is turned off and if you're not using WiFi at the moment turn it off as well, the less connections you make the longer your battery will last.
I even go as far as turning off wireless data connections if i'm not using them, nothing will bleed your battery life faster then a data connection that is constantly connecting and disconnecting.
Click on your "Manage Connections" icon to turn off the options your not using, its a simple process that can instantly help your battery life improve.