Despite more than 200 years of development of batteries, the physical limits of battery performance are far from being reached. The complexity of physio-chemical processes inside batteries render any development strongly dependent on a proper description and monitoring of the inherent evolution and interaction of all materials involved in the functioning of an electrochemical cell. It can be said that rarely any progress in a technology where all basic processes are understood did depend so much on characterization than electrochemical energy storage systems. The mean figures of merit (specific energy per mass, volume or cost unit, cyclability) can all theoretically be substantially improved, under the condition of a proper understanding of where and how their limits are reached in today’s industrialized systems. This underlines how much this important branch of our technological future depends on novel and accessible characterization techniques. Given this grand challenge, access to advanced characterisation solutions for the EU industry will be key to accelerate innovation and reduce the large cost share of materials. However, several bottlenecks are preventing access by companies to novel techniques, to which TEESMAT brings a comprehensive response by leveraging European strengths from 11 Countries and facilitating access to physical facilities, capabilities and services implementing novel characterisation solutions with unprecendenteed capability & performance. Instrumental to this is the launch of a sustainable Open Innovation Test Bed in which qualified public/private partners will demonstrate high-value services for materials advanced characterisation on industrial cases in the value chain of electrochemical energy storage systems. A strong EU community will be built up to propel the continuity of the initiative beyond TEESMAT with a viable, business driven and lean model of operation to create a market for advanced characterisation services, ultimately.