PSR650 Charging

[Squirsier]

Originally Posted by coco37

The 650 does not charge from a iPod wall charger, despite Sony support in Sydney telling me that it would, going to ring them tomorrow to see what they say this time.

Tony.

My PRS-350 does!

Edit : Model No A1205 W005B050

[Sweetpea]

Originally Posted by mwheinz

The problem is that Sony devices won't charge unless you plug them into a computer, not just a simple AC adapter that has a USB connector. This is apparently so Sony can get away with charging a large sum of money for an AC adapter that has a small computer chip in it.

Originally Posted by coco37

The 650 does not charge from a iPod wall charger, despite Sony support in Sydney telling me that it would, going to ring them tomorrow to see what they say this time.

Tony.

I don't have an Ipod wall charger, but I do have a generic USB wall charger. Which works perfectly on the Sony650.

[astra]

Originally Posted by Sweetpea

I don't have an Ipod wall charger, but I do have a generic USB wall charger. Which works perfectly on the Sony650.

Could you give a link for your charger or smth., very similar please?

[slantybard]

I successfully used the micro usb charger that came with my LG phone.

model number STA-U34WVI

nice thing is it is smaller than the sony charger too.

[astra]

Originally Posted by slantybard

I successfully used the micro usb charger that came with my LG phone.

model number STA-U34WVI

nice thing is it is smaller than the sony charger too.

Thanks. Unfortunately, no sign of it in the UK.

[Sweetpea]

Originally Posted by astra

Could you give a link for your charger or smth., very similar please?

Something like this:



It came with my ProMedia

[slow1234]

I know that this one from The Source by CC (aka RadioShack) in Canada does NOT work with my wife's PRS-650...

http://www.thesource.ca/estore/produ...roduct=1419902

I get a largely blank screen, that does say "USB connected", but no indication that it's charging.

[mwheinz]

So, basically, this is the same issue the PRS600 had, except the 600 also had a PSP-compatible power jack, so you could work around it.

That's a shame.

[induna]

Originally Posted by mwheinz

So, basically, this is the same issue the PRS600 had, except the 600 also had a PSP-compatible power jack, so you could work around it.

That's a shame.

No it isn't. From all reports to date, and from my own experience, the majority of standard USB chargers with a micro USB tip will work fine with the new readers. It appears that some chargers are not wired according to spec, like the one mentioned in the previous post, and do not work properly. That's hardly Sony's fault.

It is my understanding that there are two protocols for charging the reader (and other USB devices) -- one for when it is connected to a computer with the data lines active and the other when it is connected to charger with no data connection. If the charger is wired improperly to use the computer connected protocol, it will not work with the reader (or many other USB devices).

[ShellShock]

This USB Power Supply (order code N03GJ) from Maplin UK also does not work to charge a PRS-650, even when using the USB cable supplied with the reader.

[mwheinz]

Originally Posted by induna

It is my understanding that there are two protocols for charging the reader (and other USB devices) -- one for when it is connected to a computer with the data lines active and the other when it is connected to charger with no data connection. If the charger is wired improperly to use the computer connected protocol, it will not work with the reader (or many other USB devices).

Hoss, I've been a computer engineer for 25 years now. There is no "charging protocol" in USB - at least there is no need for one. Any "protocol" layered on top of simply providing the power levels specified in the USB standards is, by definition, a proprietary hack to keep 3rd party devices from working correctly.

For example, check out this picture. One pin provides +5v, another provides Ground. Current is limited by the spec to 500ma (although it is common for computers to provide more than 500ma for devices that draw a lot of power, like HDs). There is no need for the data pins to get involved when transferring power.

[astra]

Originally Posted by ShellShock

This USB Power Supply (order code N03GJ) from Maplin UK also does not work to charge a PRS-650, even when using the USB cable supplied with the reader.

OMG!

I think I am going to start a topic where you can tell us what works and what doesn't work with 350/650.

[ShellShock]

Originally Posted by slow1234

I know that this one from The Source by CC (aka RadioShack) in Canada does NOT work with my wife's PRS-650...

http://www.thesource.ca/estore/produ...roduct=1419902

I get a largely blank screen, that does say "USB connected", but no indication that it's charging.

This looks very similar to the Maplin UK USB Power Supply (order code N03GJ) that does not work either. Aren't RS and Maplin related?

Symptoms are the same: "USB connected" but no charging indication.

[mwheinz]

Symptoms are the same: "USB connected" but no charging indication.

- I wonder if the Sony is trying to draw more than the standard 500ma current provided by the USB spec. That would mean it couldn't charge unless it was connected to a device that provides more than the required 500ma.

[astra]

I started a new thread USB Power Supply for 350/650
Let's generate database of working/not working charges.