I bought a German Galaxy Note from Amazon.com, primarily for travel.
After rooting, installing kernel LA4, and using Titanium Backup to 'freeze' the Music Hub, Readers Hub and the other utilities which use too much data bandwidth and CPU power, but keeping the TouchWiz user interface, my phone uses less than 1% of its battery per hour.
And that is while running GrooveIP on my office WiFi, waiting for calls. K9 is also running two email accounts, but only one of them is IMAP pushed, my phone's Gmail account.
The GSM radios draw power if you are in a very weak signal area, but still in the 1%-2% range.
With Network Location switched off (to reduce data usage so as to stay under a 10MB daily allowance) the battery usage doubles -- as something in the installed software seems to want to know location, even when the GPS is turned off.
So, with GPS on, Bluetooth on, WiFi on, K9 and GrooveIP (location on) I have to be satisfied with 1% drain per hour, about 18% per day. And if a few calls come in, they don't take much power either.
I use a Black wallpaper to save power with the Amoled display. And 3% brightness is all you need for the average office. (set brightness with Widgetsoid).
So I am a very, very, happy camper with my Galaxy Note N7000. The video camera eats up the battery though. Bummer
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