Does anyone have experience with taking an IPad on an AT thru hike that they'd like to share. I'm considering one for the following reasons: It would be my journal, phone, internet connection, camera, and library. So although it weighs about a pound and a half, the weight would be about the same, with chargers, for the other devices, plus I'd have electronic books (I can't imagine reading a book from my IPhone). I know it wouldn't make a great camera, but it would be OK for me at least. I'm specifically curious about battery life if I was reading, say, one hour a day and placing one or two 15 minute Skype calls and spending about 15-20 minutes catching up on e-mails, facebook, etc if and when I had an internet connection (and if I felt like it). The device would be powered off all other times, of course. Would I get 4 days out of that kind of usage on a single charge? Also, is the solar charger of any use on the trail?