Quote:
Originally Posted by Julius Caesar
I posted my battery benchmark at Amazon forum but I will copy and paste it here for convenience. Please note that at all cases, wireless and page refresh are off. Battery life does not include the time when the device goes to sleep. Battery life is from the time the battery is fully charged to the time I got low battery warning.
I. Battery life: 13 hours 32 minutes
LED brightness: level 24 (Full blast)
Most people read less than 13 hours per day. So, as long as you plug your Kindle before you go to bed, your Kindle should meet your reading need for the whole day, even when the LED brightness is at full blast.
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How did you prevent the PW from going into Sleep Mode after 5 minutes? If you did not prevent that action, then your numbers are overstated.
I used an Excel Spreadsheet for one complete PW battery cycle to record start and stop times for 25 reading sessions carefully recorded. The total, when the recharge screen (battery icon + wire icon + power icon) was reached, was 10 hours and 29 minutes at PW light level of 22 out of a possible 24.
Power use records for the KF1G, KFHD and PW are overstated by most folks since precise measurement standards are NOT used. For the KF1G and KFHD the GSam Battery Monitor offers precise battery use measurements.
For the PW battery energy to be measured properly, it would have to be left on with automatic sleep mode disabled and then clocked to its recharge screen.
I leave WiFi on all the time for continuous syncing between my three Kindles and the GSam App shows WiFi uses very little energy compared to screen use.