I received the PRS 600 in Feb, 2010 as a birthday present. Believe me, I never would have gotten this for myself as I am not a fan of anything Sony.
That being said, for the first month or so, this thing was great and I wondered how I could ever live without it. Having an entire library in my pocket!
Stating in April, I noticed that the battery wouldn't take a complete charge. It would fill the battery indicator to half full and that was it. This was using the PSP wall charger and it went downhill from there.
At present a full weekends charge - 3 days - gives me just under 1 hour of use!!! By the time I get to work, I'm getting the low battery warning.
Is this a known issue with this thing and if so, is there a fix or should I just chuck this sucker off the Brooklyn Bridge on the way home?