I went down to 1 bar after a week of use and more than 2000 pages of TXT mode reading use.
(I am thinking that the type of file you read may change the battery consumption rate. For those who get LOW page counts: What format were you reading and how many days since last
full charge? )
I also did a number of "Demo" showings to co-workers

so my page count is low.
I was fully re-charged in less than 6 hours using the wall charger.