Why doesn't MacBook Pro go to sleep when the battery is empty?

OK am I correct in thinking you mean that it should have gone to sleep more not turn off at end of battery?

I am an owner of a macbook for just a few hours so far, but on my old power book, the warning then a more emphatic warning, then it shut down as end of battery arrived.

I never heard of callibrating a battery...I will look into that. Thanks.

There is nothing wrong with your MB. It's suppose to shutdown when the battery is empty.

Your MB goes in sleep mode when you don't use it for a period of time. It doesn't go to sleep when the battery is empty.

Why are you calibrating a new mb if you're getting 7 hours? That might do more damage than good to your battery.

Charge your battery once it reaches 50% to keep your battery in optimal shape.

Also, you can read your user guide about your battery's life and peformance and how to maintain it.

You're just panicing - after there's no more battery reserve left, the Mac will shut down. And if you've a newer MacBook Pro with the unremovable battery, there's no reason to calibrate the battery. See http://support.apple.com/kb/HT1490. As it states:

"Portables with built-in batteries

Current Apple portable computer batteries are pre-calibrated and do not require the calibration procedure outlined in this article. These computers use batteries that shouldbe replaced only by an Apple Authorized Service Provider."

Regards,

Clinton

DO NOT calibrate your battery unless it's one of the old, removable type. No need to. And, yes, "when the battery gets very low, the computer will automatically go to sleep. But you're letting your battery completely drain which is not a good idea.

Regards,

Clinton

(Old article for previous line of laptops. That's why it says it'll go to sleep. I'll just assume they used to do that.)

I would think that sleep indicates enough power to start up... if battery empty it is empty.

You're welcome woffmatix.