well, I'll just reply my experience here but I know they are multiple threads on this topic
I had my phone for a full week now.
Battery life really got me scared at first!!! had unexplainable drains
I did a 2 full discharges where one really had the phone shutdown.
and now I get great timings!
BUT
I had issues with SKYPE notifications. (didn't get them anymore) and so I uninstalled SKYPE. Now I have great battery life!
NFC is off
bluetooh is off
I'm on 3G (don't really need faster seriously...) & wireless is on
I've got 4 e-mail accounts set to 1 hour sync
background apps: weather, battery, ski app, hello friends (set to refresh lock screen every 24 hours)
SO again I blame the drain on SKYPE and also probably because after 1 week I've trained the battery a bit
here's a phone after a full discharge
phone today after nightly charge and full day on battery. OK I admit had only a few calls and a minimum of surfing
I'm sure there are days when drain will be heavier... but when I don't use my often, I would expect to come home with a phone at least still 50% charged.
so my advice is if you experience drain, try disabling apps that run in background or apps that are setup to receive notifications. It could very well be one of these. Don't blame the phone directly, nor the OS running it