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Old 07-16-2012, 10:45 PM   #1
ack!Hobos!
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Post-Root Battery Life experiences? Please contribute!

Hello. There is only one thread on this anywhere on the net and it is very old without many posts. The PRS-T1 has been around long enough now that many root users should have a fair idea of battery life.

Approximately how many hours are you rooted PRS-T1 owners getting? Is it worse than before? Have you found methods to compensate? Does the app used to read make a difference in your experience?

Most of the people mentioning a difference say it is significantly worse after rooting. However there are also the occasional post with someone who doesn't notice a difference. Assume the PRS-T1 was fully charged when rooted (or that the battery has since been recalibrated).

Please post regardless if your experience is positive or negative or even if you feel your opinion isn't noteworthy. Thanks guys! I love the forum!

edit: BAH! Didn't include PRS-T1 in the thread title. If there be a MODERATOR please change the title to clarify! Thanks!

Last edited by ack!Hobos!; 07-16-2012 at 10:48 PM.
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Old 07-17-2012, 04:58 PM   #2
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with the porkupan root i felt that the it didn't afftect battery life at all,now with AMR it seems it is a bit shorter (but maybe it's due to the battery % always visible that maybe tricks me)

i'm testing this app (with porkupan root worked very good)

https://play.google.com/store/apps/d...fe.taskmanager
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Old 07-18-2012, 06:38 AM   #3
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I did the Minimal Root and deleted all non-critical apps. Use Fbreader to read, read approx. 1-1,5 hrs a day and get between 3-4 weeks out of 1 battery charge. Did root it after a couple of weeks, so can't compare it to pre-root.
Don't use WiFi, Notes or anything, just reading.
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Old 07-22-2012, 05:53 AM   #4
Zmol
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I rooted with minimal root and Morkls package and 3 weeks without reading drains the battery completely... Considering unrooting...

Once the battery is at 60% or so 1 hour of browsing/using wifi will drain the battery entirely
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Old 07-26-2012, 04:27 PM   #5
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I also rooted with AMR and deleted "non-essential" apps (as per my guide).
I use the standard Sony reader.
My battery seems to drop about 5% a day while reading about 2 hours (I also regularly turn off the normal refresh mode to check my offline wikipedia).
I'm not really worried since I connect to calibre almost every day anyway.
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Old 07-27-2012, 02:40 AM   #6
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I recently had a case where the book database update notification (the spinny circle thing in the top-left of the notification area) was on continuously and battery disappeared alarmingly quickly. A reboot of the reader "fixed" it, and I haven't had a battery life problem since (nor had I had a problem prior to that).

My T1 is rooted, but I have no idea if this contributed to the problem.

Cheers,
Simon.
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Old 07-28-2012, 05:06 PM   #7
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I have battery-life issues as well: Often, the battery is depleted after two or three days of light use.

Using the BetterBatteryStats app, I found that two processes named “switcher” and “PowerManagerService” seem to prevent the device from going into deep sleep by hogging the kernel wakelock. I don't know what “switcher” does. “PowerManagerService” appears to be the kernel component of all partial wakelocks; here, the “surface drawing lock” seems to be the culprit, which seems to be related to the Kindle app.

From some cursory experimentation, the battery seems to last longer (that is, apps, especially the Kindle app, behave more civilized) when Wifi is on standby rather then switched off completely.
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Old 07-30-2012, 06:29 AM   #8
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boy! - at least I'm not the only one!! There's a workaround to the switcher issue:

http://www.mobileread.com/forums/sho...d.php?t=181673
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