I can go probably almost month without having to charge it if I only read 30 minutes a day like what promos for front-lit readers advertise. For the last 2 weeks that's about all the time I've been able to manage to read per day and the battery is now at 48%. I have wifi and sync always off, the light is always on around 28% if I remember, I use a sleep cover and never actually shut it off. I'm using firmware 2.4.0.
So maybe there is a problem with the newer firmware.
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