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oldyellr · 01-22-2012, 10:51 AM

There has been a lot of talk about short battery life. I though the battery was going down too fast, so yesterday I did an experiment.

I started reading about 11 a.m. with a fully charged battery. Whenever I put the Vox down to do other things, I put it in sleep mode. All I used was Aldiko to read a book and didn't use any other apps or wifi, which I keep in airplane mode. Once in a while I would check the battery level and what was using it (Menu/Settings/About Kobo eReader/Status & Battery Use) At about 11 hours 19 minutes up time, I got the 10% charge warning. I guessed I might have been actually reading for maybe 4 hours, the rest of the time the Vox was in sleep mode. However, when I checked Battery Use, there is a graph at the top of the screen showing the battery level over time. The x-axis is a line with black and blue segments which appear to be when the Vox was asleep and awake and it appeared as if the ratio was about equal. I could see where the downward slope was steeper when awake than when asleep. (I also noticed that the upward slope when I started charging again was a lot steeper, about 45°, and in the hour or so that I read before turning in for the night it was back up to 70%.)

Now, here's something curious. When I got the low battery warning, I checked Battery Use and saw this:

Display - 54%
Kobo eReader Idle - 43%
Android OS - 3%
Aldiko - 2%

What's all that about? I never used the Kobo eReader at all, only Aldiko. Could the Kobo Reading Live be working in the background, sucking down the battery? I have shut down Reading Life, as far as I know, but I still get that windowshade thingby accident sometimes when scrolling.

01-22-2012, 10:51 AM	#1
oldyellr Evangelist Posts: 486 Karma: 26106 Join Date: Nov 2011 Location: Canada Device: Kobo Vox, Amazon Fire 7	Battery life There has been a lot of talk about short battery life. I though the battery was going down too fast, so yesterday I did an experiment. I started reading about 11 a.m. with a fully charged battery. Whenever I put the Vox down to do other things, I put it in sleep mode. All I used was Aldiko to read a book and didn't use any other apps or wifi, which I keep in airplane mode. Once in a while I would check the battery level and what was using it (Menu/Settings/About Kobo eReader/Status & Battery Use) At about 11 hours 19 minutes up time, I got the 10% charge warning. I guessed I might have been actually reading for maybe 4 hours, the rest of the time the Vox was in sleep mode. However, when I checked Battery Use, there is a graph at the top of the screen showing the battery level over time. The x-axis is a line with black and blue segments which appear to be when the Vox was asleep and awake and it appeared as if the ratio was about equal. I could see where the downward slope was steeper when awake than when asleep. (I also noticed that the upward slope when I started charging again was a lot steeper, about 45°, and in the hour or so that I read before turning in for the night it was back up to 70%.) Now, here's something curious. When I got the low battery warning, I checked Battery Use and saw this: Display - 54% Kobo eReader Idle - 43% Android OS - 3% Aldiko - 2% What's all that about? I never used the Kobo eReader at all, only Aldiko. Could the Kobo Reading Live be working in the background, sucking down the battery? I have shut down Reading Life, as far as I know, but I still get that windowshade thingby accident sometimes when scrolling.