PSP Charger?? - Page 2

MovieHQ · 01-15-2009, 09:38 PM

I have used a PSP charger since I opened my 505 box. I have never used the USB to charge and have had no decrease in battery charge in over a year.

When it is charging the red light should come on. When it is done it goes off, just like charging through USB.

JWLaRue · 01-15-2009, 10:58 PM

Quote:

Originally Posted by lilac_jive

Yes, that will not work. The AC adapter slot for the reader is not the same one that it uses for the USB.

Check the pic below

I am not using the yellow barrel connector port of the reader to charge. I am using the USB connector.....

JWLaRue · 01-15-2009, 11:01 PM

Quote:

Originally Posted by MovieHQ

I have used a PSP charger since I opened my 505 box. I have never used the USB to charge and have had no decrease in battery charge in over a year.

When it is charging the red light should come on. When it is done it goes off, just like charging through USB.

Thanks! That's what I wanted to verify!

-Jeff

lilac_jive · 01-15-2009, 11:01 PM

Quote:

Originally Posted by JWLaRue

I am not using the yellow barrel connector port of the reader to charge. I am using the USB connector.....

I know, that is why it is not working

That only works if you are actually connected to your computer with the USB.

So, in summary, two ways to charge:
1)Via PC using USB cable with Blackberry/razr/digicam end into Reader
2)Via wall using AC adapter with circlular end into Reader (yellow hole)

JWLaRue · 01-16-2009, 12:59 PM

Very interesting.

Any idea why an AC charger via the USB port would not work? Why would the reader care or know the difference?

-Jeff

JSWolf · 01-16-2009, 01:09 PM

Quote:

Originally Posted by JWLaRue

Very interesting.

Any idea why an AC charger via the USB port would not work? Why would the reader care or know the difference?

-Jeff

The reader would know the difference as you cannot read while charging via the USB port. So why use an AC adapter that takes away this functionality (If it even works)? Seems silly to me.

gwynevans · 01-16-2009, 07:30 PM

Quote:

Originally Posted by JWLaRue

Any idea why an AC charger via the USB port would not work? Why would the reader care or know the difference?

AIUI, the USB protocol specifies some 'handshaking', which the 'dumb' supplies don't support/supply. Most devices taking power ignore the fact it's missing, but the Sony sticks to a strict interpretation of the spec & doesn't charge.

JWLaRue · 01-16-2009, 09:40 PM

re: handshaking

Okay, that makes sense.

re: read while charging

To be honest, Jon. That's not a priority or concern for me. So it's definitely *not* silly.

-Jeff

murraypaul · 03-02-2009, 11:17 AM

Quote:

Originally Posted by lilac_jive

So, in summary, two ways to charge:
1)Via PC using USB cable with Blackberry/razr/digicam end into Reader
2)Via wall using AC adapter with circlular end into Reader (yellow hole)

3) Via PC using USB->PSP charger cable. This has mini-USB and PSP-power adapters on one end. If you use the PSP-power adapter you can charge from a PC and still carry on using the reader. Like this: http://www.pspworld.co.uk/product_de...%20Accessories

tech_au · 03-02-2009, 04:21 PM

I bought one of these cables last weekend because I was sick of charging the reader by the PC and getting the database refresh when you unplug it.
I had an AC Adapter with a USB socket on the end and plugging in the cable I bought I can now charge the reader by using the AC Adapter.

itzmeigh · 03-09-2009, 01:07 PM

Since I can use a PSP wall charger can I also use the PSP car charger? We are going on a trip and since I'm new to my reader i don;t want to chance running out of battery on the 14+ hour drive. Plus we do a bit of camping.

pilotbob · 03-09-2009, 01:09 PM

Quote:

Originally Posted by itzmeigh

Since I can use a PSP wall charger can I also use the PSP car charger? We are going on a trip and since I'm new to my reader i don;t want to chance running out of battery on the 14+ hour drive. Plus we do a bit of camping.

yes, it should work just fine. That said, your Sony batter shouldn't even notice the reading time on a 14 hour drive. Unless you have a 700 and you use the lights.

BOb

itzmeigh · 03-09-2009, 01:40 PM

Thanks Bob! I have the 505. I didn't think I'd need it but the PSP charger stays in the van. So I was just making sure while it was on my mind.

khalleron · 03-21-2009, 11:40 PM

Any charger with the right voltage and polarity should work, it doesn't have to be a Sony branded one. I'm using an old one from a long dead iPaq, and it works fine.

namtastic · 03-27-2009, 04:26 PM

Also, powered USB is 5V even. So even if the PRS charger is set at 5.2V, battery management should handle 5V just fine if it also supports charging over a USB connection.

The difference in charging speed is the amperage. Voltage is the chunk of electricity you get, and amperage is how quickly you get those chunks. The PSP charger and the PRS charger both supply 2000 mA, hence the speed.

USB provides a variable amount from 100 - 1000 mA as requested. Negotiation tells the USB controller how much to send to the peripheral, and the software in the device can adjust its charging style based on how much juice it's getting from the controller.

If I had to take a wild guess, I'd say the without the negotiation, the Reader plays defensive and blocks charging so the USB circuitry doesn't accidentally get wrecked (i.e., we don't know what amperage it wants -- it might only be rated up to 500 mA) at worst, and at best so that the rate of charging matches what battery management expects.

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01-15-2009, 09:38 PM	#16
MovieHQ Member Posts: 15 Karma: 10 Join Date: May 2008 Device: Sony Reader 505	I have used a PSP charger since I opened my 505 box. I have never used the USB to charge and have had no decrease in battery charge in over a year. When it is charging the red light should come on. When it is done it goes off, just like charging through USB.

01-16-2009, 12:59 PM	#20
JWLaRue Addict Posts: 234 Karma: 300000 Join Date: Feb 2008 Location: Annapolis, MD USA Device: Sony PRS-505 (blue, of course!)	Very interesting. Any idea why an AC charger via the USB port would not work? Why would the reader care or know the difference? -Jeff

01-16-2009, 09:40 PM	#23
JWLaRue Addict Posts: 234 Karma: 300000 Join Date: Feb 2008 Location: Annapolis, MD USA Device: Sony PRS-505 (blue, of course!)	re: handshaking Okay, that makes sense. re: read while charging To be honest, Jon. That's not a priority or concern for me. So it's definitely not silly. -Jeff

03-02-2009, 04:21 PM	#25
tech_au Oz Bookworm Posts: 516 Karma: 4056 Join Date: Nov 2008 Location: Australia Device: Sony PRS 505,PRS 650	I bought one of these cables last weekend because I was sick of charging the reader by the PC and getting the database refresh when you unplug it. I had an AC Adapter with a USB socket on the end and plugging in the cable I bought I can now charge the reader by using the AC Adapter.

03-09-2009, 01:07 PM	#26
itzmeigh Enthusiast Posts: 29 Karma: 10 Join Date: Feb 2009 Device: PRS-505	Since I can use a PSP wall charger can I also use the PSP car charger? We are going on a trip and since I'm new to my reader i don;t want to chance running out of battery on the 14+ hour drive. Plus we do a bit of camping.

03-09-2009, 01:40 PM	#28
itzmeigh Enthusiast Posts: 29 Karma: 10 Join Date: Feb 2009 Device: PRS-505	Thanks Bob! I have the 505. I didn't think I'd need it but the PSP charger stays in the van. So I was just making sure while it was on my mind.

03-21-2009, 11:40 PM	#29
khalleron Kate Posts: 1,700 Karma: 3605799 Join Date: Mar 2009 Location: Oregon, United States Device: MeeBook, Kobo Libra Colour	Any charger with the right voltage and polarity should work, it doesn't have to be a Sony branded one. I'm using an old one from a long dead iPaq, and it works fine.

03-27-2009, 04:26 PM	#30
namtastic Junior Member Posts: 1 Karma: 10 Join Date: Mar 2009 Device: Sony PRS-505	Also, powered USB is 5V even. So even if the PRS charger is set at 5.2V, battery management should handle 5V just fine if it also supports charging over a USB connection. The difference in charging speed is the amperage. Voltage is the chunk of electricity you get, and amperage is how quickly you get those chunks. The PSP charger and the PRS charger both supply 2000 mA, hence the speed. USB provides a variable amount from 100 - 1000 mA as requested. Negotiation tells the USB controller how much to send to the peripheral, and the software in the device can adjust its charging style based on how much juice it's getting from the controller. If I had to take a wild guess, I'd say the without the negotiation, the Reader plays defensive and blocks charging so the USB circuitry doesn't accidentally get wrecked (i.e., we don't know what amperage it wants -- it might only be rated up to 500 mA) at worst, and at best so that the rate of charging matches what battery management expects.

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