Early this year I bought an HTC Desire to replace the horrible Nokia 5800 I had. Nifty little phone, I like it a lot but it eats trough a battery charge in a day or so. I finally got to grips with that. Here's my tips
- Disable dynamic wallpaper
- Disable any radios you do not use (bluetooth and wifi especially)
- Disable Wifi positioning (settings- location- use wireless networks)
- Set phone to GSM only if you don't need data (settings-wireless & networks -Mobile Networks -Network mode)
Now I get three days out of a single charge instead of just one day.