OT:
Thanks Pinecone!
But: I have had among others a very comparable system (2 AA, USB-port & cable) which functioned well with an Ipod. But not with the PRS350...
That's what I try to tell - you cannot be sure a distinct charger is compatible. Even a distinct USB port on your PC could fail. It never was a problem with the non USB connector of say the PRS300.
I forgot: I tried even a crank-charger. When you turn the crank too fast - no charging. When you turn the crank too slow - no charging. When you turn it just right - there could be a chance. But I didn't manage it.
And no, the reader is OK (I have 2 PRS350), no failure.
A.
Sorry for OT