Using the Kobo Glo HD, and having some concerns with battery life. Last line of post is most useful.
Purchased and been using the device since August 2015. When I first charged and used it the battery life was exceptionally good. Held a good charge when reading some hours a day for ~3 weeks time.
The settings used were backlight on 0%, wifi off, sleep after 5 minutes, no screen saver no power off. 3.18.0 Firmware.
After charging it for the second time things were considerably different. I maintained settings but the battery drain was exceptionally faster. Now, after reading a few hours the battery is as expected changing 1-3%. Then, placing the device into sleep while not in use. If I return to the device within 12 hours the battery life seems to be good.
However, if I leave the device in Sleep mode for any period of time > 24 hours I see very large battery drain of 30-50% between uses.
