PRS-T1 PRS-T1 Battery problem - Page 3

Gustav Gans · 12-07-2011, 05:28 AM

I have to charge almost every day because I use Wi-Fi to surf the web, and that can drain the battery within 1 day.

carpetmojo · 12-07-2011, 07:56 AM

I can't get over how good my battery is - 3 weeks now - charging via 650 mains charger .

jersysman · 12-07-2011, 10:11 AM

Quote:

Originally Posted by Gustav Gans

I have to charge almost every day because I use Wi-Fi to surf the web, and that can drain the battery within 1 day.

You must be doing some heavy-duty surfing to drain your battery in a day. That could be a defective battery. Did you ever not use wifi so heavily? If so, how much battery did you get out of it? Plus, with the issue you reported with the buttons, maybe think of returning it and getting another unit

DirkGently · 12-09-2011, 05:16 PM

Should the wall charger be micro usb or ordinary usb?

JSWolf · 12-09-2011, 07:24 PM

Quote:

Originally Posted by DirkGently

Should the wall charger be micro usb or ordinary usb?

Micro USB. I use an iGo wall charger with the blackberry tip.

capuchino71 · 12-10-2011, 07:09 AM

Quote:

Originally Posted by JSWolf

Micro USB. I use an iGo wall charger with the blackberry tip.

Strange, my IGo can't charge the PSR-t1, but can charge the prs350

JSWolf · 12-10-2011, 09:32 AM

Quote:

Originally Posted by capuchino71

Strange, my IGo can't charge the PSR-t1, but can charge the prs350

That is odd. I wonder why that is.

hary12 · 12-27-2011, 05:04 AM

I bought my dell charger on the side http://www.scontobatteria.com , and it has not had any problems.

tnoko · 02-22-2012, 09:13 AM

I could not figure out the charging issues with this device. Sometimes it sit for for days in the charger, with no positive effect.

So I made my own charger out 5Volts 5Amps power source. It had an amp-meter too. This is what I found out:

PRST1 starts charging cycle with load tests (max 750mA). If the charger is able to provide, it happily continues using the biggest. If all of those tests fails, the charging current will be extremely tiny (50mA), which would take WEEKS to charge the battery.

The problem is that the Sony's test is TOO DAMN SHORT, it does not allow the the voltage to settle.

I found plenty of USB-cords that could not provide. And in fact often the RF-filter (the black round thingy) seemed to raise the inductance just enough for the load test to fail. Sony's own USB cord is OK. Also all cords which are very short and do not have the RF-thingy are good.

JSWolf · 04-30-2012, 01:25 PM

Quote:

Originally Posted by conocan

Hi guys,

I just ordered a PRS-T1 and now looking for charger. I don't wanna buy the original sony charger since it is slightly expensive.

Does anyone has this:
http://www.amazon.com/Generation-Cha...pr_product_top

I would appreciate your comments and suggestions.

If you want something of know good quality that works and is cheaper, go with iGo.

http://www.igo.com/mobile-devices/wa...t/ps002540008/

it is a wall charger that comes with a free tip and the price is $11.99 . Just get the blackberry tip. It is what I use to charge my 650 and it works well with a T1.

Hartsock · 05-27-2012, 10:58 AM

I really can't understand the T1 battery performance. Sometimes the charge can be full, or near full... I put the T1 into Standby, wi-fi and wi-fi standby off. Pull it out a day later and the T1 has shut off. Powering up and battery meter is showing nothing.

On the other hand it can go a couple weeks left in Standby after reading and no such problem as above. Don't know if it is a battery problem, a power metering problem, of something completely different.

mochaiso · 08-15-2012, 01:07 AM

I've had mine since April and was not having any problems and then just a week ago I started seeing this. It seems that the battery is ok, but what ever software manages it on the reader gets buggered up. My unit is non-rooted and I use Calibre to manage the books on it. How do you recalibrate the battery if the unit is not rooted? There is no /data/system/batterystats.bin file on my unit.

uboot · 08-15-2012, 05:37 AM

Without root you only have 2 options:

1) Fully charge the battery and do Factory Reset. You'll loose all data of course...

2) Do a couple of full charge / discharge cycles, the reader should calibrate automatically.

Maybe there's also a third option: enter recovery console (https://wiki.mobileread.com/wiki/PRST...covery_Console), be sure the battery is fully charged. Now you can delete the file via

Code:

cd /tmp
mkdir data
mount /dev/mmcblk2p9 data
rm data/system/batterystats.bin
umount data
reboot

Even the unrooted reader has the Testmode app installed and there must be a way to activate it, I'm not sure. But with Testmode app, you can boot into recovery console too.

mochaiso · 08-15-2012, 10:54 AM

uboot,

I tried your idea but it's not working due to the same issue discuss here.

uboot · 08-15-2012, 11:39 AM

Ok, if you want to go for the third option, let's continue in the thread you mentioned. I'm sure there is a solution, we just need to find the magic files needed to make an unrooted reader boot into recovery...

I also updated the wiki instructions: https://wiki.mobileread.com/wiki/PRST...covery_Console

02-22-2012, 09:13 AM	#39
tnoko Immobile Posts: 1 Karma: 10 Join Date: Feb 2012 Device: Sony PRST1	Sony PRST1 charging problems (solved) I could not figure out the charging issues with this device. Sometimes it sit for for days in the charger, with no positive effect. So I made my own charger out 5Volts 5Amps power source. It had an amp-meter too. This is what I found out: PRST1 starts charging cycle with load tests (max 750mA). If the charger is able to provide, it happily continues using the biggest. If all of those tests fails, the charging current will be extremely tiny (50mA), which would take WEEKS to charge the battery. The problem is that the Sony's test is TOO DAMN SHORT, it does not allow the the voltage to settle. I found plenty of USB-cords that could not provide. And in fact often the RF-filter (the black round thingy) seemed to raise the inductance just enough for the load test to fail. Sony's own USB cord is OK. Also all cords which are very short and do not have the RF-thingy are good.

08-15-2012, 05:37 AM	#43
uboot Evangelist Posts: 425 Karma: 75216 Join Date: Nov 2011 Location: old europe Device: Kobo Mini, Tolino Epos 2	Without root you only have 2 options: 1) Fully charge the battery and do Factory Reset. You'll loose all data of course... 2) Do a couple of full charge / discharge cycles, the reader should calibrate automatically. Maybe there's also a third option: enter recovery console (https://wiki.mobileread.com/wiki/PRST...covery_Console), be sure the battery is fully charged. Now you can delete the file via Code: cd /tmp mkdir data mount /dev/mmcblk2p9 data rm data/system/batterystats.bin umount data reboot Even the unrooted reader has the Testmode app installed and there must be a way to activate it, I'm not sure. But with Testmode app, you can boot into recovery console too.

08-15-2012, 10:54 AM	#44
mochaiso Member Posts: 16 Karma: 14 Join Date: Apr 2012 Device: Sony PRS-T1	uboot, I tried your idea but it's not working due to the same issue discuss here. Last edited by mochaiso; 08-15-2012 at 11:01 AM.

08-15-2012, 11:39 AM	#45
uboot Evangelist Posts: 425 Karma: 75216 Join Date: Nov 2011 Location: old europe Device: Kobo Mini, Tolino Epos 2	Ok, if you want to go for the third option, let's continue in the thread you mentioned. I'm sure there is a solution, we just need to find the magic files needed to make an unrooted reader boot into recovery... I also updated the wiki instructions: https://wiki.mobileread.com/wiki/PRST...covery_Console Last edited by uboot; 08-15-2012 at 11:53 AM.

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12-07-2011, 05:28 AM	#31
Gustav Gans Enthusiast Posts: 34 Karma: 10 Join Date: Dec 2011 Device: Sony PRS-T1	I have to charge almost every day because I use Wi-Fi to surf the web, and that can drain the battery within 1 day.

12-07-2011, 07:56 AM	#32
carpetmojo Wizard Posts: 3,117 Karma: 9269999 Join Date: Feb 2011 Location: UK Device: Sony- T3, PRS650, 350, T1/2/3, Paperwhite, Fire 8.9,Samsung Tab S 10.5	I can't get over how good my battery is - 3 weeks now - charging via 650 mains charger .

12-09-2011, 05:16 PM	#34
DirkGently Member Posts: 10 Karma: 10 Join Date: Nov 2011 Device: Sony PRS-T1	Should the wall charger be micro usb or ordinary usb?

12-27-2011, 05:04 AM	#38
hary12 Junior Member Posts: 2 Karma: 10 Join Date: Dec 2011 Device: deviced	I bought my dell charger on the side http://www.scontobatteria.com , and it has not had any problems.

05-27-2012, 10:58 AM	#41
Hartsock Enthusiast Posts: 47 Karma: 38 Join Date: Mar 2012 Device: Sony PRS-T1	I really can't understand the T1 battery performance. Sometimes the charge can be full, or near full... I put the T1 into Standby, wi-fi and wi-fi standby off. Pull it out a day later and the T1 has shut off. Powering up and battery meter is showing nothing. On the other hand it can go a couple weeks left in Standby after reading and no such problem as above. Don't know if it is a battery problem, a power metering problem, of something completely different.

08-15-2012, 01:07 AM	#42
mochaiso Member Posts: 16 Karma: 14 Join Date: Apr 2012 Device: Sony PRS-T1	I've had mine since April and was not having any problems and then just a week ago I started seeing this. It seems that the battery is ok, but what ever software manages it on the reader gets buggered up. My unit is non-rooted and I use Calibre to manage the books on it. How do you recalibrate the battery if the unit is not rooted? There is no /data/system/batterystats.bin file on my unit.