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Step #20 Lines

[* black] Insert wisdom hereSomeone really did not want the battery in the MacBook Pro to come out of the upper case.
[* black] We tried valiantly with our [http://www.ifixit.com/Tools/iFixit-6-Inch-Metal-Ruler/IF145-108#.T9g7XitYu7M] to free the battery from its aluminum confines, but to no avail. Rather than risk puncturing a lithium-ion battery cell, we left the power source in place
.
[* black] Insert wisdom hereSomeone really did not want the battery in the MacBook Pro to come out of the upper case.
[* black] We tried valiantly with our [http://www.ifixit.com/Tools/iFixit-6-Inch-Metal-Ruler/IF145-108#.T9g7XitYu7M] to free the battery from its aluminum confines, but to no avail. Rather than risk puncturing a lithium-ion battery cell, we left the power source in place
.