I do not doubt that the kindle has great battery life. I guess it comes down to how you read advertising. 30 hours or 2 at 1/2 hour a day.
Sorry, but I think you didn't read my previous email. Again, battery life in the Kindle is not necessarily highly correlated to reading hours, as you continue to insist must be the case. Again, the Kindle battery can go to zero in about a month even if you are reading it 0 hours a day. Reading a Kindle basically doesn't take any power. Page turns do. Turning the modem on to transmit data does. Turning the Kindle on and off does. Kindle auto-updates take power. Reading a PDF instead of a mobi file takes more power -- more computing power -- but once a PDF page is displayed it again basically takes no power. Trying to relate Kindle reading time to battery life would be like having a battery powered inkjet printer (which do exist) and asking how long can one spend reading before the inkjet printer's battery goes dead. Answer: You can read as many hours as you want with the inkjet printer turned off and the battery won't go dead, because the inkjet's battery life doesn't depend on whether you are reading or not. Reading the printed page made by the inkjet printer is passive, depending on overhead light "for power". Same with the Kindle. It is pretty close to being a 100% passive device while you are reading a page, relying on overhead light "for power" so that you can see what is on the Kindle display. Page turns take some power [very little] but retaining that display on the Kindle once it has been displayed basically takes zero power -- so read as long as you like. Read eInk.com to get some feel for how the display technology works "without taking any power."