Originally Posted by SL4VE
I've had massive improvements with Juice Defender. 12 hours to Flat before and now 30 hours with good use. Internet navi the lot running.
I have nothing to do with the people behind Juice Defender but even the free version works brilliantly. And there is an add-on (also free) that shows the battery level in graphical form over time, so you can see how well it is recharging and when it's really being drained.
I have no concerns about battery life any more. And I may well buy the premium version as this can control the wifi mode as well as optimise things for night time while you're asleep.