What did you do?
Sent from my SCH-I535 using Android Central Forums
Switched from push email to pulling pop3 every 15, disabled every Verizon app I could and all the samsung apps with the exception of AllShare Play (I use it) and the main Samsung account (which is needed for ASP). I keep my screen on the minimum (unless a situation calls for a brighter display). I also disabled activesync exchange services as I no longer need them and it was still running sometimes. From what I read on XDA, that is a common occurence on Samsung's ICS builds with various phones.
I never use WiFi, I'm always on 4G. An hour of my display time was streaming HBO Go last night.
I obviously don't need 40 hours between charges, but I think with these settings if I use the display for a few more hours it will balance out right. The first couple days when I hadn't installed much or anything I was getting 18 hours on with 5.5-6 of display time with some hbo streaming and a lot of net browsing and texting.