Since I’m currently travelling in the UK for more than a month already, I have Wireless turned off on both Kindle 2 and Kindle DX that I have. After a month of moderate reading while Kindle was getting an occasional small charge only when I connected it to the computer to sync new content battery indicators on both K2 and DX were showing roughly 75% battery capacity.
My original intent was to wait some more and then make a post about how great Kindle battery life is if you turn off the wireless. However before I could do that, interesting thing happened. When my wife turned on her K2 the charge indicator jumped from 75% to “critical low” (battery icon with exclamation mark). Kindle had to be charged. In a couple of days exactly the same thing happened to my Kindle DX.
This happened about one month after devices were fully changed. What is interesting that although my wife read roughly 3 times as many pages as I did, batteries in our devices ran out at about the same time. So it looks like it was more related to idle time rather than usage.
Amazon’s official stance is that with wireless turned off Kindle should go around 2 weeks without a charge depending on the usage. Ours lasted twice as long. However what’s more interesting is the way charge suddenly dropped to zero. Something you should keep in mind if you intend to take your Kindle somewhere without electricity for long time.
I’m interested if anyone has observed similar strange behaviour?