Battery ejection mechanism

The mechanism has an ejection unit secured to a battery housing (1). The ejection unit operates to transfer a mechanical force applied to a button through an arm to a portion of an electrical device housing (100). The arm applies a mechanical force to the portion of the electrical device housing in a direction perpendicular to a direction in which a mechanical force is applied to the button. An independent claim is also included for a method of ejecting a battery housing removably attached to electrical device housing.