Recently , I've noticed that the battery life became extremely short , it last only 20-30 pages
...,sometimes only pushing the buttons several times will drop one bar of the charge meter . I used to charge it with usb via my computer , but the battery life was OK , it used to take a week to drain the battery , but now I need to charge it every day .
so I thought may be the usb no longer capable of charging the battery probably , so I bought a 5 v. AC adaptor - the only one available here - I couldn't find 7v. AC adaptor.
Is it the charger or there is something wrong with my reader ?