DRAAGBARE HULPVOEDINGSEENHEID.

摘要

The present invention relates to a lightweight auxiliary power supply utilizing a plurality of button cells, preferably of the zinc air type. The present invention contemplates a housing member containing a plurality of wells, each adapted to receive one or more disc shaped button cells; switch means to control the flow of oxygen to the cells; and electrical connecting means to suitably connect the power supply to the battery operated device or appliance.