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Old 10-29-2012, 01:57 PM   #7
sirmaru
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Posts: 2,242
Karma: 6379788
Join Date: Nov 2007
Device: PW 2013, HDX 2013, PW 2012, HD 2012
WiFi effect.

Quote:
Originally Posted by Katie1 View Post
With WiFi Off how long does the Battery last?
If you leave WiFi off all the time, then you should get 6 hours and 30 minutes of battery life down to zero for the KFHD7-32.

I use the GSam Battery Monitor to make these calculations. WiFi on all the time uses between 5% and 10% of battery energy - NOT the larger percentages commonly believed.

My last cycle with WiFi on all the time went to a full charge at the 19% level and 5 hours and 39 minutes of use.

My present cycle shows 2 hours and 25 minutes of screen time used soaking up 45% of battery energy. My WiFi on all the time has soaked up 10% of battery energy.

My GSam Battery Monitor forecasts that I have 3 hours and 37 minutes left to zero battery energy left. I plan to do a full charge at the 10% to 15% level.

The biggest App user is Media = playing all my MP3 songs while I read, at 8% in this current cycle. System apps use 15% of battery energy in my current cycle. Reading eBooks uses only 1% in my current cycle and my Logos Bible app uses 2%. Every time I wake the KFHD7-32 I notice the GSam battery energy icon in the upper right corner drops 1%.

With this GSam app its easy to glimpse one's hours used and energy left right before one goes to a full charge and then record it in a spreadsheet to know the real battery history.

In contrast the Paperwhite got 10 hours and 29 minutes in its last battery cycle. There I track reading session times on a spreadsheet.

Last edited by sirmaru; 10-29-2012 at 02:08 PM.
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