I am not sure if that is really correct. I was told with my Iphone that its battery would not 'overcharge'. That is just accepts in coming power to charge the battery and when it's done it turns it off and cuts off electricity coming in. I always plug in my Iphone overnight to charge and even sometimes have forgotten it during the day so it would have been on the charger for 24 hours and it didn't overheat. I believe these new batteries are much better then the electronic/cell phone batteries of old. I also don't have to drain the battery and recharge like with some batteries (my laptop recommends doing that once a month)asordu said:I do both. Sometimes I turn it off overnight, sometimes I leave it in sleep mode.
Whispernet really does drain the battery quickly. As soon as I turn mine on the battery drops a notch.
I've seen that a lot of people charge their's overnight. I would be very hesitant to do that. The battery fully charges in less than 2 hours and overcharging it could lead to overheating and possibly even blowing it up. You hear of that happening in cell phones and even iPods. The Kindle uses that same type of battery. The dealer told me when I bought my last cell phone never to charge it more than 2 hours because of that.