Description Comarco is charging ahead with renewed focus. The company markets a line of battery chargers, called ChargeSource, designed for mobile phones, notebook computers, and a variety of other portable devices. It markets ChargeSource products through its retail partner, Kensington Computer Products (a division of ACCO Brands), which sells the products under its own label. Comarco previously operated two other businesses -- emergency call box installation and maintenance and wireless network monitoring products -- but it divested those operations between 2008 and 2009.