I see numerous threads where people are complaining about their SmartPhone not being able to keep its charge for more than 8 hours to a day. Many people suggest that they close programs or take out their SD card in order to save battery life. Instead of doing this, I just recommend that when you are finished and about to close the phone, keep hitting the back button until it won't go back any more and you are on the Home screen. Hitting the back button closes any other screens that are open and drastically saves on battery life. My phone goes for about 3 days without needing a recharge. HTH.
On the Orange SPV, the latest rom image includes a tak manager that lets you close down unused apps. The battery still sucked on mine though so i found the ultimate fix.... I got a Motorola V600 instead :D