My daughter has a late 2008 Aluminum 2Ghz MacBook with 4 RAM and recently updated to Mountain Lion. Last week the battery stopped working so I ordered a third party replacement through Amazon which appears to be an Apple battery. We charged the battery overnight and my daughter started using the computer the next day after removing the power cord. She used it for about an hour and the battery showed 75% life. She turned if off and later couldn't get the computer to power on without hooking up the power cord. I zapped the PRAM, reset the SCM a couple of times and have had no luck getting the battery to function. After reinstalling the battery, the mag connector shows orange, the menu bar shows the charging graphic but a constant 0% charge-- also the "time to full charge"in the menu bar is greyed out. The "about this mac" info doesn't indicate that the battery is bad but also shows zero charge. After 5 or ten minutes the mag connector changes to green and the menu bar indicates an "X" for no battery. The "about this mac" info indicates that no battery is installed. Did I get a bad battery from a third party vendor? Could there be any problems with Mountain Lion and the charging routines on this era MacBook? My daughter's original battery "went bad" within a week of her upgrading from Snow Leopard to Mountain Lion. Could be just a coincidence but the old battery gave the same info as the replacement. It would act like it was charging but not get above 0%--then change to "no battery"
Thanks
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