My Nexus S (which admittedly is not new, but battery is) lasted about a day if I used it a bit and up to two days if I turned the cell data and wireless off and

My Nexus S (which admittedly is not new, but battery is) lasted about a day if I used it a bit and up to two days if I turned the cell data and wireless off and didn't touch it. Wifi, location and bluetooth were turned on strictly on need basis and for as long as I needed them. A bit means turning the screen on for a minute 3-4 times a day and not more than one call lasting <5 minutes. I do sleep, but not always somewhere I could plug it in (camps, cheap hotels without plugs...), but to be honest even if I can, I don't particularly like tending to my phone like it was some kind of tamagotchi.