It is so lame that there isn't a meter on the display. Heck, even the camera's three segment meter is too coarse for me, but no meter at all? Come on!
I have had my 580 for just over a month, and this weekend I took a couple of shots with it and it suddenly went dead. I had a second set of Eneloops ready to go, but it seems a little harsh that it just falls on its face like that. No meter, no warning. I hadn't noticed that the recycle time had lengthened a bit until these last couple of shots because the last few outings had been primarily fill flash outdoors.
Love the Eneloops. I got a lot of pops out of my first charge...a month of occasional use.