Just ran Coconut Battery on mine. Here's the stats:
752 load cycles.
Now down to 85% capacity, 4312 mAh (original capacity was 5020 mAh)
Gets 3 hours on average.
Original battery, 51 months from manufacture date (purchased in Dec. 07)
Should comment about use patterns, just in case that plays a role:
Primary machine from Dec 07 - Dec 10
Has been used occasionally over the past year, maybe 2-3 times a week
Typically gets charged when the battery is near depletion unless it's only being unplugged for a little bit. Rarely charged at, say, 50%. (This is true of all of my battery-powered devices except the Air, which I use in the field a lot and just plug in at night regardless of what it's standing at; if I can, though, I do run it to 5% before charging it).
752 load cycles.
Now down to 85% capacity, 4312 mAh (original capacity was 5020 mAh)
Gets 3 hours on average.
Original battery, 51 months from manufacture date (purchased in Dec. 07)
Should comment about use patterns, just in case that plays a role:
Primary machine from Dec 07 - Dec 10
Has been used occasionally over the past year, maybe 2-3 times a week
Typically gets charged when the battery is near depletion unless it's only being unplugged for a little bit. Rarely charged at, say, 50%. (This is true of all of my battery-powered devices except the Air, which I use in the field a lot and just plug in at night regardless of what it's standing at; if I can, though, I do run it to 5% before charging it).