Guidelines for prolonging Li-ion battery life
Unlike NiCad batteries or NiMH batteries, lithium-ion batteries should be charged early and often. However, if they are not used for a longer time, they should be brought to a charge level of around 40%. Never use the battery care functions some cellular phones provide for nickel based batteries. (This will deep cycle the batteries.)
Li-ion batteries should be kept cool. Ideally they are stored in a refrigerator. Aging will take its toll much faster at high temperatures. Keeping them in very hot cars can kill lithium-ion batteries.
Avoid running the battery through "deep discharge" cycles that is using it until it's fully depleted to 0 %.
Many authors suggest that freezing Li-ion batteries may be detrimental. However, most Li-ion battery electrolytes freeze at approximately -40°C. Household freezers rarely reach below -20°C. Published experiments demonstrate that freezing (even below -40°C) is unharmful if the battery is fully warmed to room temperature before use. More details are given in the book "Characteristics and Behavior of 1M LiPF6 1EC:1DMC Electrolyte at Low Temperatures" by L.M. Cristo, T. B. Atwater, U.S. Army Research, Fort Monmouth, NJ.
Buy Li-ion batteries only when needed. Look at the manufacturing date. That is when the ageing process begins.
When using a notebook computer running from fixed line power over extended periods, it is advisable to remove the battery and store it in a cool place.
However, many laptop manufacturers recommend against removing the battery from a laptop while it is plugged in, as this can damage a laptop designed to operate with the battery installed. Some manufacturers are also concerned about dust accumulation with the battery removed. Therefore, check the manufacturer's instructions before removing the battery.
The MacBook/MBP calibration evidently is to help the chip deteremine how much power is really left. I would just leave the battery in and ignore it and not bother going to the effort to make it degrade faster by doing a monthly full discharge. I would consider storing the battery in the fridge (and I probably will with my backup battery) except that I value the laptop and my data more than the $129 battery.