Originally Posted by DaleDe
And I believe this is the key. If you leave coolreader before locking the device I believe you won't have any battery problems. At least I don't. I think coolreader is not integrated well with the power saving on the unit in this release. Probably will be fixed in the future but the work around is pretty easy.
I have to agree. I didn't even lock the device, just left it on the table with a page in a book (being read by Coolreader) open - and it flattened itself in a very short time. It went flat so fast that I'd almost think it is worse than just preventing the power saving kicking in. It's almost like Coolreader sat in a loop consuming extra power.