Battery allowed to discharge and Date/Time settings lost

Question

Level 1

9 points

Battery allowed to discharge and Date/Time settings lost

My wife left her MBP opened and unplugged. The battery completely discharged. When she powered the computer with a power cord, the Date/Time were completely wrong. She also lost her network settings.

To me, this sounds like the internal (bios) battery has a minimum voltage. Does anyone have some insight to this before I go struggle with the Genius Bar?

MacBook Pro, Mac OS X (10.6.4), 3GS iOS4

Posted on Jun 25, 2010 1:03 PM

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Answer 1

Kappy

Level 10

361,885 points

Jun 25, 2010 1:19 PM in response to mysticbrew

If the computer has an internal cell it is used to retain computer settings, but it cannot retain them for very long which is why those settings are lost. However, they are easily re-configured once the battery is charged.

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Answer 2

mysticbrew Author

Level 1

9 points

Jun 25, 2010 1:25 PM in response to Kappy

Great to hear that . . . the computer is only six months old. I didn't want to have to send off for repair.

Thank you.

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Answer 3

The Nail

Level 1

8 points

Jul 6, 2010 4:28 AM in response to mysticbrew

I had the same problem; I let it go, as it seemed to be fine after charging.

Now I've just started up with a full charge - and had the same problem!
Does anyone know if the date & time etc settings are kept from a seperate battery (one of those tiny lithium jobs) or if it uses a "trickle" off the main battery? Has anyone else experienced this?

I will call support for this as the machine's only 3 months old.

Insight appreciated...!

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