I hesitate to believe the numbers for the iPad and the Kindle are that similar. For starters, the iPad has a more sophisticated processor, and the battery has 4.3x the capacity of the kindle battery (which suggests 4.3x the rare compounds if the batteries are made with similar tech).
Add on power consumption during reading, and things are even more different; the Kindle can be read for 2 weeks on one charge. 24 hours x 14 = 336 hours. The iPad uses the same juice in just 10 hours / (4.3x as large) = 2.3 hours
In other news, I most certainly will be reading more than 50 books in the lifetime of my Kindle, so hooray :)
Add on power consumption during reading, and things are even more different; the Kindle can be read for 2 weeks on one charge. 24 hours x 14 = 336 hours. The iPad uses the same juice in just 10 hours / (4.3x as large) = 2.3 hours
In other news, I most certainly will be reading more than 50 books in the lifetime of my Kindle, so hooray :)