I was very disappointed when I bought my 4g touch. Battery life was much worse than my 2g. The only way I could get good battery life (multiple days of use) was to turn on airplane mode when I wasn't using it. I brought to the Apple store and they replaced the iPod twice (costing Apple a fortune and me a lot of wasted time). Still no luck - lousy battery life on all three of the touches. Then comes ios 4.3. Instantly much better battery life. I'm getting 3 days plus of life where as I was getting 1 day max before. I no longer have to switch airplane mode on and off!