Quote:
Originally Posted by kcladyz
Yes wifi off bluetooth off light level at 10 at night , sometimes a tad higher. drains 6% to 10% a day 
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I've been able to get zero (!!) battery drain overnight by switching the light off. I've now put my bold levels up to four, and that way I can read the screen easily, even in dim light. I find if I have the light on at all, even at low levels, the device drains (even though the light is supposedly off, with the cover closed).