How to charge a battery to optimize maximum performance

This is a general question on how to charge your laptop battery  perfectly.
I heard people saying that charged your battery till 98-99% then remove the charger
Some said that it is not harmful to remove the A/C even if the battery is fully charged.
What is the best way from the above two.
Thanks.

Charge it until it is fully charged. See the following:
About Batteries in Modern Apple Laptops
Apple - Batteries - Notebooks
Extending the Life of Your Laptop Battery
Apple - Batteries
Determining Battery Cycle Count
Calibrating your computer's battery for best performance
Battery University

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