[Toby]

I have been noticing that when the battery gets down to around 30 - empty, that it goes down to the teens overnight. Why does the battery drain this quickly when it gets to the lower numbers?

 

[Ann in Arlington]

If you have wireless on, it will do syncs for the books and apps you have loaded and check for new stuff.

 

[Toby]

I do keep wireless on all the time. That could be it. Thanks, Ann! 

 

[Cyanide5000]

Your supposed to drain the battery right down to 0 and then a full charge up to 100 once in a while to recalibrate the battery life sensor as well

 

[Toby]

I've heard that theory/fact as well as not going down to 0, but draining to the teens, on a discussion group. I try to go down at least once a month to the teens on my iPads, & that seems to work. At least I hope it has been recalibrated. I try to to the same with the Fire. Your method may very well be what I should do. Have you had any problems draining the battery to 0?