[nttdemented]

That is normal of the 1% battery driver. It drops fast from 100% - about 85% and it level out after that. After a fully charged battery I'm getting a little over a day with light usage. No matter what sort of hacking, tweaking a Diamond won't last a Day with heavy use and the stock battery, not even black magic will work.

I have had times where I forget to charge the phone at night and with light usage (just receiving a few calls in the weekend and making another few) it has lasted me almost two full days.