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Old 04-16-2013, 07:36 AM   #1
kintrupf
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Device shuts off with 70% battery

For a long while I noticed that my PRS-T1 had very little battery life. I could not really pinpoint it to a percentage, but the battery seemed to be empty after a hundered pages at most. I never noticed any bars missing in battery meter, but suddendly the device is out of power.

After rooting the device and installing another battery meter it displayed 70% when it powered off.

Weird, isn't it? Can I assume that the battery is "nearly dead" and should be replaced? The device is a bit over two years old.
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Old 04-16-2013, 07:54 AM   #2
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I would remove all books and then put only a few on, and see if that makes a difference.
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Old 04-16-2013, 10:35 AM   #3
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Quote:
Originally Posted by kintrupf View Post
For a long while I noticed that my PRS-T1 had very little battery life. I could not really pinpoint it to a percentage, but the battery seemed to be empty after a hundered pages at most. I never noticed any bars missing in battery meter, but suddendly the device is out of power.

After rooting the device and installing another battery meter it displayed 70% when it powered off.

Weird, isn't it? Can I assume that the battery is "nearly dead" and should be replaced? The device is a bit over two years old.
It's hard to pin it down to a certainty as Sony's software seems to be terrible at judging the battery accurately.
Ideally I'd tell you to completely drain the battery before recharging it from a mains charger and see if that helped but it's that hard to drain an ereader especially one turning itself off so early you may be better off just buying another reader.
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Old 04-16-2013, 06:48 PM   #4
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You are charging it overnight ? i.e. not just for squirts of power, but a good 8 hr or so charge ?
And from a wall charger, much more reliable than via PC .......

If that fails to correct it, it is more likely to be a dud battery for replacement, providing it's economic ....
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Old 04-22-2013, 05:54 PM   #5
Arios
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Did you tried to remove the hack and reinstall the latest firmware anew?

BTW 2 years, depending of the usage, can be sufficient to kill a battery.
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Old 04-26-2013, 04:27 AM   #6
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Originally Posted by Arios View Post
Did you tried to remove the hack and reinstall the latest firmware anew?
No, I didn't unroot my device.
The problem is unrelated to the firmware, I noticed the very short battery life before when I still had the original firmware.

So I guess I have to find me a new battery...
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Old 05-08-2013, 10:18 AM   #7
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Quote:
Originally Posted by kintrupf View Post
No, I didn't unroot my device.
The problem is unrelated to the firmware, I noticed the very short battery life before when I still had the original firmware.

So I guess I have to find me a new battery...

From another thread:

I had a similar problem- my battery was fully discharging in a matter of hours. Here's how I fixed it:
Fully charged device with wall charger. Once charged did a reset- paperclip + power button.
Battery life back to normal now
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Old 05-15-2013, 08:51 PM   #8
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Another thing to do is once the T1 is charged, remove the power cable and charge it again until you get it showing full in less then 1 minute. That will sync the battery.
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Old 05-27-2013, 09:22 AM   #9
Nabuccoo
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I have exactly the same with my T1. It is about 1 and a half year that I bought it. For a while the battery drains off very quickly. First I noticed that after 1 day it loses about 40-45% in sleep mode too. So after 2 days the battery was empty. I unrooted it, i thought there is some app that don't let the reader to go deep sleep mode. So after unrooting I updated the firmware to 1.05 and I rroted it again. Now I watched out the apps what I am installing. No widgets or auto sync etc. After 1 day the battery was on 95%, after 3 days it was still 85%, looked normal. Then, a half day later the reader shuted down itself. The battery was fully depleted. After charging, happened the same, 3 and a half day and a the battery is over. I recalibrated it with the battery calibration app. After that the battery was at 95% after 3 days too, and a half day more and it huted down again with empty battery.
After that I tried to drain the battery to 75-80% after chargeing, by useing wi-fi. In this way the battery lasts 8-9 days after shuts down again. And this behavior is regular. Every time, exactly the same. I don't know what can I do to fix it. Or can I do something?
Ohh I am useing usb to charge via pc, I don't have wall charger.
Now I am trying what JSWolf wrote. Maybe it will help...

Last edited by Nabuccoo; 05-27-2013 at 09:28 AM.
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Old 06-01-2013, 06:21 AM   #10
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For everyone who interested. I have tryed JSWolf's hint. It was 5 days ago and the reader is still fine. The battery is on 85%. I will post how much it will last, too.
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Old 06-01-2013, 10:45 PM   #11
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Quote:
Originally Posted by Nabuccoo View Post
For everyone who interested. I have tryed JSWolf's hint. It was 5 days ago and the reader is still fine. The battery is on 85%. I will post how much it will last, too.
I hope it works. I would like it know how it works out for you.
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Old 06-18-2013, 05:47 AM   #12
Nabuccoo
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Yes, it is definitely works. My T1 shuted off after 20 days. I just read books on it, no wifi or anything else. (It was hard to stop myself to use these stuffs, too. ) I read in this time the first three books of The Saga of Heechee by Fedrik Pohl. So trick that removing and pluging in again the charger after the T1 has fully charged is working perfectly for me.
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