It could also be related to the cover (if you have one) - if the magnets inside it are too strong or misplaced. It happened to one of my colleague last year. The battery was draining fast even when the kobo wasn’t use (in sleeping mode). I made her to try without it during a week : no depletion. I ended up removing the magnets.
Last edited by cramoisi; 07-09-2015 at 01:55 AM.
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