I have firmware V1.6 and started off with my DR battery indicator at 100%.
I had it switched on for 4 hours yesterday with occasional page turning (battery was at 65% remaining when I switched it off). I used it for 8 hours today, occasional page turns and a few scribbles.
Its just come up with the "battery almost empty" message. That's 12 hours with occasional page turns and a little bit of scribbling. That's just one day of testing - but its an indication.
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