I have a question about the unibody macbook battery, when it is plugged in, and fully charge (icon says "Recharged") does the power automatically come directly from the adapter or still from the battery? Does the battery unloads itself to 99% then charges back to 100% all the time? or is there some smart system that prevents that? I guess if it didn't it after 100 recharges of going from 99 to 100% it would count as a cycle?? Thanks for enlighting me up!