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When you are not using the device-do you fully shut it down ? I have a memory card in my device,and routinely use the light (particularly for late night reading)-my battery lasts far more than a week (and more than 1000 pages per charge).In fact,I think it was only a few days ago where I was down to critically low battery power.When I do not plan on reading,out of habit,I do a "full shut down" of the device.....
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