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Old 11-20-2011, 09:28 AM   #1
sirmaru
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Posts: 2,427
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Join Date: Nov 2007
Device: Kindle PW 2013, HDX 2013, Galaxy S5 2014
Power Consumption Tests for the Kindle Fire

11/17/2011 7:50 PM

Power consumption for Kindle Fire:

Was able to charge from 23% to 100% in two hours.

Recharge signal is issued at 15%
Capacity from 100% down to 15% = 85%

Hold On/Off Switch:
One Second - Sleep Mode
Five Seconds with Option Showing - Shut Down Mode (Required after using external speaker.)
Twenty Seconds - Reset Mode

Reading for 31 minutes:
Starting time / power level: 11/18/2011 5:43 PM / 100%
Finish time / power level: 11/18/2011 6:14 PM / 93%
Power consumption = 7%

Music for 23 minutes:
Starting time / power level: 11/19/2011 1:09 PM / 76%
Finish time / power level: 11/19/2011 1:32 PM / 73%
Power consumption = 3%

WiFi On (from the Settings) + Tune In App turned on for Sleep Mode -
Start of power down for 14 hours - time / power level: 11/18/2011 6:14 PM / 93%
Finish of power down level for 14 hours - time / power level: 11/19/2011 8:14 AM / 91%
Power consumption = 2%

WiFi On (from the Settings) + Tune In App turned on for Shut Down Mode -
Start of power down for 12 hours - time / power level: 11/19/2011 7:32 PM / 25%
Finish of power down level for 12 hours - time / power level: 11/20/2011 8:19 AM / 30%
Power increase = 5%

Conclusions:
1. Shut down Fire every night.
2. Alternate reading between 4th Gen Fire and 3rd Gen Keyboard each day.

The only suprise was that Shut Down Mode results in an INCREASE of Power in the battery since ALL processes ceased and the battery level could stabilize.
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