Gräetzell cells generate energy by imitating the principle of photosynthesis. They have a smaller volume, are less fragile than conventional photovoltaic cells, can take different colors and patterns, and work both indoors and outdoors. TypeN is a digital object. It aims at aggregating data of all kinds. It is made for travelling, when electronic devices face problems of electrical compatibility when they are supposed to collect memories. Gräetzell cells are combined with other layered technologies (flat battery and flash memory).Via USB, TypeN can load with energy and download with data the daily life of a traveller's digital devices. It is made of three movable parts in order to place Gräetzell cells effectively to capture light. A net of translucent elastomer maintains the whole and its design is inspired by plant cell structures to ensure maintenance and light flow to Gräetzell cells.