So, my kindle 8th generation is less than a year old, and it's battery used to take a long time before dropping down to 20% (which is when I charge it). However, after my last charge, it has dropped quicker than usual. I'm reading for about an hour nonstop and I find it going down about 5%. I don't know if it's normal. I hadnt used my kindle for a while (however I never forgot to charge it when it reached 20%, because I was always taking care of it) and I can't remember if that was normal to happen. The device is updated, so much so that when I try to manually update it, it says there's no new updates. I have performed a soft reset but it keeps the same way. Oh, but now I'm highlighting lots of parts of the book, and I wonder if this might have an effect in the battery, whether for storage-related reasons or whatever might be the case. I wonder if it's normal for the battery to drop 5% in about an hour read. My kindle 8th generation is only 8 or 9 months old. PS: it's always on Air-Plane mode. Thank you in advance
