Battery usage

[fluffer]

I'm completely new to the iPhone but I'm so glad Apple wore me down enough to pick up a 3G S. I have a query about power usage. After being on charge over night plugged into a power socket, I unplugged at 08:00 and by 11:30, battery is down to 77%. I haven't used it a great deal this morning, went online for 10 mins or so, checked email but mainly it's been on standby.

Is this a normal percentage and should I not be too concerned?

 

[Que]

read this thread, it contains links to 3 other threads with exactly the same topic.

 

[fluffer]

sorry.

 

[Que]

sorry.

don't be. just pointing you towards all the answers you need.