Just charge the Kindle when it tells you to. All Kindles have a please charge message that pop ups when you're reading, do not wait for it to turn off on you and give the battery is dead message.
I charge my eInk Kindle when it tells me to. I charge the Kindle Fire around 15% to 25% percent. It's really hard to get the Fire down to 15%. I get 10 to 12 hours of battery life on my KF, 1 month and 1/2 on the K3 and two weeks on the K4s.
Last edited by Blossom; 10-21-2012 at 03:52 PM.
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