Most likely, your backup battery is no longer holding a charge. Apple has provided a nice chart of part numbers that will help determine which battery your computer needs for a replacement:
docs.info.apple.com/article.html
docs.info.apple.com/article.html
Some batteries are easily serviced by pretty much anyone, but some are soldered in. If you are not sure, visit an Apple Store or other Apple repair tech near you.
docs.info.apple.com/article.html
docs.info.apple.com/article.html
Some batteries are easily serviced by pretty much anyone, but some are soldered in. If you are not sure, visit an Apple Store or other Apple repair tech near you.
