Originally Posted by Calebrity

Pokey, the releases are done to fix issues like this
battery drainage could be caused by multiple things;
- How many apps youi have open all the time
- Screen brightness
- Are you running apps that are constantly updating in the background (ie: weathernetwork)
- Is your wifi / bluetooth on

if anything I have found that the most recent release that was leaked for the 9700/6.0.0.461 has been good for battery life. I would only begin to assume that it would be the same for the 9780 and for the 9800/6.0.0.450 seems to be really good for battery life as well. just have to keep control of different things on the device.