Poor stand-by battery life?

[jebem]

How many charge cycles did you had before this issue?
It looks like the battery is dead already, not a good sign for a new calculator.

I got mine just one week ago, new in the box. It didn't power up at all, so the battery was discharged.
I just gave it a full charge of 6 hours using the supplied charger, then connected it to the PC applied the latest f/w revision (Nov-25).
So far, after a week it still shows 100%, considering that I have used it just 1 hour per day at most, and a couple of times it was connected to the PC via USB, so it was consuming power from the PC.