|
The battery drain says that something is wrong. That could prevent sleep from happening properly. And the fact that you are seeing the same problem on two devices, says you should look a the common factor. Which is probably the books (unless you have a super-power that is to drain batteries).
As a simple test, when you next stop reading, restart the device and put it to sleep. That will stop any rogue process and initialise everything. If there is no big power drain, it suggests the problem is a book.
Something else to do is check the device actually sleeps. There is usually some light leakage under the cover to see when the light turns off. And make sure there is nothing around to interfere with the magnetically operated switch. A lot of people have complained about devices not sleeping and draining power to discover the sleep was being blocked by something.
|