In this project a design concept for PV powered PDA (Personal Digital Assistant) was designed. The design was made with the aim to use the matching model. The main challenge of the project
was to integrate a PV surface larger than the functional product in such a way that it can optimally convert energy and users can conveniently use the product. The final product design is a mobile device that is highly energy efficient. The target group consists of users that have a modest demand for functionality and thus energy consumption. The PV panel is foldable and detachable. Folded, the panel is small enough to fit in the cover of the device. When detached the panel can be left to charge its own battery on a location with high light intensity. The main device can be used on a different, darker, location. As soon as the panel is connected to the device again, the energy stored in the panel’s battery is transferred to the device’s battery.

A tangible model was made of the product. The final design is a concept, a showcase. It is estimated that the design is technically feasible in terms of technology by the year 2010.