I've been observing my new Macbook Pro 17", 2010, core i5 battery use, monitoring the amperage parameter in system profiler. After being fully charged, and the charger cable light turning green, I see amperage still showing around 600 mAh charge current, and it does not seem to ever stop, no matter how long I wait (some say trickle charge should stop after approx 2 hours). Now, if I disconnect the charger, and then reconnect it again within a few seconds, and restart my mac, the system profiler shows charge as zero mAh, thus indicating that all charging has effectively stopped. However, as I mentioned above, this does not happen if I keep the charger connected after fully charging the battery. Is this behavior normal? I have also observed that system profiler info sometimes stops updating (e.g. after I disconnect and swiftly reconnect the charger it is stuck at last reading, not updating after I hit Cmd+R), so it might be that it is just stuck on latest trickle charge figure, and not updating properly?