Quote:
Originally Posted by jackastor
I have never had an issue with an sd card causing battery drain. On that note more research would have to be done brand etc. But I rather suspect your cover could be the culprit here. You can test that out by removing the cover or leaving the cover open when you go to bed. Also ensure your wifi is turned off etc. You can also improve battery levels by lowering the light settings, but as a rule I leave mine at full 24/7 I find the reader is more enjoyable that way.
Also try draining the battery to empty 2 or three times to help calibrate the battery.
Good luck
Let us know
regards
Jack
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In my case it was definitely the card. I don't know what exactly is wrong with it, but it is a bum card (my phone is having issues with the card as well). My drain started when I put the card in (although since I have also upgraded firmware at the same time I have wrongfully attributed the the drain to the upgrade) and it stopped when I pulled it out.