11-30-2011, 12:48 PM | #16 |
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11-30-2011, 02:09 PM | #17 |
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Perform a factory reset. That has been shown to cure the problem. It seems to be a well known Android problem. http://www.kb.sony.com/selfservice/v...4494&sliceId=1
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11-30-2011, 06:50 PM | #18 |
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ah, sorry - I mixed something. bought a sony bt headset which has an included 550mA USB charger.... my T1 doesn't have one...
---- 1A won't be a problem as the T1 (as every other lithium battery powered tablet/smartphone/laptop) controls charging current... (without built-in current control, the battery would explode...) My Sony smartphone will use up to 750mA for charging, if the charger is able to supply it... So, it seems that with more amps, the T1 manages to charge better... ---- compared to factoryreset, battery recalibration can be achieved easier: https://wiki.mobileread.com/wiki/PRST...roubleshooting Last edited by uboot; 11-30-2011 at 06:57 PM. |
12-01-2011, 08:29 AM | #19 | |
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Quote:
thanks for that advice I will continue to use my htc charger. i did notice my last charge that the epub book i was reading seemed to bleed battery dry alot quicker that others. i had that happen once before but by pressing home button before putting reader to sleep seems to sort it. thomas |
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12-02-2011, 08:54 AM | #20 |
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Hm haven't faced that so far, but setting a fixed wallpaper might be another workaround...
Or letting an app like Free-Advanced-Task-Manager autokill the reader app when switching to standby... |
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12-02-2011, 02:54 PM | #21 |
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Trying to find a charger that I could use with my new T1; does anyone know the specs of the official Sony charger? 5V DC, but what is the power rating? I have an old one for a bluetooth headset that puts out 5V at 550 mA but I'm worried that's not enough. Most of the ones of eBay seem to be at least 1000 mA. Will it not charge properly if I use it with the 550 mA one? Tx-N
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12-05-2011, 05:23 PM | #22 |
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so, why don't you just buy one from ebay with at least 1A? you won't need more than 1A I guess...
550mA - that's only 50mA more than charging via computer - certainly too small... |
12-06-2011, 02:35 AM | #23 | ||
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As I said in another thread the device will only ever draw the maximum current that it is designed to do. As long as the charging source meets the minimum requirements (matches the USB spec) then it will be fine. You could have a charger that provides 10A output but if the device is designed with a maximum current draw of 500ma then that's all it will take. |
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12-06-2011, 05:37 AM | #24 |
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According to https://www.mobileread.com/forums/sho...8&postcount=11 charging with higher amp wall charger will signifficantly increase battery life compared to charging via USB/Laptop...
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12-06-2011, 09:27 AM | #25 | |
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Quote:
The Sony Charger is 1000 mA. I tried three different charger I had for my other ereaders and they didn't work so I had to go buy the Sony charger. (My other readers are not Sony so I did not have a previous Sony charger) The other readers Adapters specs are: T1: Sony PRSA-AC10: Input: .2A Output: 5V 1000 mA (1A) Libre: SAW-0501200: Input: .5A Output: 5V 1200 mA (1.2A) Astak Pocket Pro: HNC050100C: Input: .3Amax Output: 5V 1.0A Augen: JKY36-SP0500500 Input: 150mA max Output 5V 500mA But for some reason, only the Sony adapter worked. AJ |
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12-06-2011, 11:21 AM | #26 |
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I have the official Sony Reader adaptor PRSA-AC1A which has PRS-T1 listed as supported device and outputs 5 V and 1500 mA.
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12-06-2011, 01:41 PM | #27 | |
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I use both a USB port and a wall charger to charge my 650 and I can honestly say that I notice no difference in how long the charge lasts for. The only difference is that it takes longer for the red light to go out when using the USB method. One thing you must do is leave your reader charging after the light goes out as this does not indicate that the device is fully charged. As I said charging via USB is perfectly OK - if it were not then Sony would be obliged to include a charger with every reader they sold. You also must realise that the current drawn by the reader varies throughout the charging cycle. The closer the battery gets to a full charge the lower the current flowing. Theoretically when the battery is fully charged the current will fall to zero, but this almost never happens and the slope of the current curve will just flatten off. So if you charge your reader on a regular basis before it gets too low, as is recommended for long life, the potential difference between the 5v USB source and the battery voltage will be such that it's unlikely that you would exceed the 500ma available. There also must be some circuitry in the reader that limits the charging current as charging the battery at too high a current will destroy the cells. So to sum up. In my opinion there is no reason why charging using USB is any worse than a separate wall charger. As long as you do not let your computer go to sleep and you also leave your reader connected for long enough, then there can be no difference. After all at the end of the day it is just down to the laws of physics! |
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12-06-2011, 01:52 PM | #28 |
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I have tried using an ordinary USB charger. When I first plugged it in, it seemed to revive the totally dead battery, but after an hour or two I saw a message that the unit wasn't charging. I moved it over to my computer and then it started charging just fine. I have a couple of other devices that seem to have ordinary USB ports for charging, but actually require their specific chargers or a computer. A pox on them for making life difficult - unnecessarily. If it didn't have the micro USB connector, I'd try to use one of the other special charges which has a mini USB plug.
In short, it looks like the PRS-T1 requires the Sony charger or using a computer. |
12-06-2011, 04:02 PM | #29 | |
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12-06-2011, 08:33 PM | #30 |
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I use my Samsung phone charger and it does a great job. I've not had any problems as of yet. I've only had to charge it twice since I have had it. Once the initial charge and one time since.
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