Quote:
Originally Posted by gimble
That depends on a number of factors. Eink consumes power only during screen transitions, but if you turn on wifi/3G that will constantly drain the battery.
When wifi is turned off (airplane mode), my kindle lets me get through 3-5 full length books (150K+ words per book) with a single charge. The same on a typical tablet will require at least two charges per book, even with brightness turned down, night mode, wifi off and battery conservation mode.
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My point was the iPad has excellent battery life unlike most tablets.
I can easily finish HP5 Order of the Phoenix (250K words?) on the iPad and still have 50% battery remaining. Granted, I do read at minimum brightness (sometimes with extra dimming enabled) but that's because I find the display too bright. No other power saving options.
On the PW3, I often read at 4-6 brightness level with wifi disabled, font Bookerly at size 5. That front light is a constant drain on battery, too.
The iPad may use more power than the Kindle but it also has a much bigger battery to offset that increased power consumption.
Kindle Paperwhite 3: 1420 mAh
iPad mini 4: 5124 mAh
iPad 6th gen: 8820 mAh
Again, from my experience, the iPad lasts almost as long as my PW3 for ebook reading.