Hi!
So, two days ago I charged my Kindle Touch with my wall charger which is a Sony Ericsson EP800 which has an Output Power of 5V at 850mAh. I think it was charged for approximately 3 hours.
The Kindle Touch is supposed to handle a 4.5V at 850mAH. I wouldn't have worried except today, for the first time, my Kindle Touch malfunctioned and showed a blank screen when I tried to turn the page. I clicked the power button, and then it automatically rebooted itself. It seemed okay for a while but then it happened again. The screen went blank. I clicked the power button, and then it rebooted. This time, it seemed fine, and I was able to continue without any problems.
I hope I didn't fry something inside by charging it with a higher voltage than it was meant to handle for that long. Perhaps I messed something up inside. I wonder if these two matters are related. PLEASE LET ME KNOW if my charging it with that charger would have affected it.