Computer with multiple removable battery packs

A method, comprising:

• undocking a computer from a docking station, at least a portion of the docking station inserted into a volume defined by a first battery pack mated to an outer surface of the computer;
• and
• installing a second battery pack in said computer so that at least a portion of said second battery pack is installed into said volume.

A method, comprising:

• removing a second battery pack from a computer, at least a portion of said second battery having been installed into a volume defined by a shape of a first battery pack already installed on said computer;
• docking the computer to a docking station, at least a portion of the docking station inserted into said volume defined by the shape of the first battery pack.

A computer, comprising:

• means for housing a processor;
• means for providing a first removable source of direct current (DC) power to said processor and for alternatively coupling to a docking station and to a second removable source of DC power.