Remove battery while using power adapter?

I mostly use my Macbook running on the power adapter and was told that this would kill the battery if left in the laptop. Is this true?

welcome to macbook forum.
the answer is no, if you use the battery occasionally to keep the juice flow, and or calibrate it once a while like a month or so.
http://www.apple.com/batteries/notebooks.html
http://docs.info.apple.com/article.html?artnum=86284
and pull the battery out will reduce the speed if used with magsafe alone.
http://docs.info.apple.com/article.html?artnum=305336
Good Luck.

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