Thursday at 1959 hrs, (day 4): 34% battery charge remaining. The battery life of the Mugen is impressive to say the least.
Since migrating to WM, I've never had a work week of runtime. If I can make it through the day tomorrow w/o having to charge at noon, I'll be very impressed.
The capabilities of a pocket PC plus the battery life of a regular phone. Can't get much better then that.