Quote:
Originally Posted by elizilla
Polly,
I suspect you're fortunate in having cables kicking around that actually worked. Perhaps all micro-USB power cords work fine. I don't have any other devices in my collection of gadgets, that charge from micro-USB, so I have been testing what happens when I plug the cord that came with my 650, into a variety of generic USB chargers. And my results have been the opposite of yours. So, yup, still confusing.
Here's what I posted in an earlier thread:
I have a Griffin USB wall charger I use to change my Sansa MP3 players, but it didn't work with my PRS650. The specs on this say it is 5v, 1000mA.
Neither did my Belkin USB car charger - the PRS650 saw it as USB, but didn't kick over to charge mode. This one is labeled 5v, 1A output with a 12v input. The cig lighter port I had it plugged into would have been putting out a little over 12v, because that's what motorcycles do, but I wouldn't think that would matter.
The USB port on the Alpine stereo in my truck didn't even look like USB to it, it was like it wasn't plugged in at all. I have no idea what specs that port puts out, but the stereo was on so you'd think it was live.
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Hmm, I thought we were talking about the cable part of this equation versus the wall wart. The USB port on your truck wouldn't have looked like a USB to your reader. That's for you to connect music sources to your truck stereo. I doubt it's designed for charging, but your truck might have been willing to play music from the reader. I've not tried to charge mine of of a lighter adapter (12V), mostly because it only needs charging every other week or so and I manage to schedule charging around car trips. Inside the house, mine has charged off of the adapter that Astak gave me with my PEz last year, my Palm Pre adapter, both of my battery pack chargers (one doesn't hold a charge anymore but still has two USB ports for charging), and a surge protector that has USB connections. In fact, I can't think of anything where it refused to charge. If the adapter is compliant with universal USB requirements, it should work. Some adapters with two USB ports only give half of the charge to each port, especially if you have two devices plugged in at the same time. Not sure why it didn't work with your Griffin, but that's the only one on your list where I'd expect it to work.
At the risk of being painfully obvious, how are you deciding that it's not charging? Are you waiting for the screen message to change or are you looking for the red light to come on next to the stand by slider? When you plug it into a wall, you can still use it as a reader. The only indications mine shows that it's charging are the tiny red light and a change in the battery icon at the bottom of the screen.