The report is a part of the efforts of CERIC-ERIC, a distributed research infrastructure in the field of materials characterisation and modification, to produce its Research and Infrastructure Roadmap. General Assembly has in 2019 approved a pilot action on Batteries, in order to identify the bottlenecks and needs for upgrades of CERIC-ERIC in this domain. To this end, an expert group consisting of Antonella Iadecola, Lorenzo Stievano and Benedetto Bozzini was contracted and the group submitted their report May 18th 2020. The activity is supported by the project ACCELERATE, co-funded by the European Union Framework Programme for Research and Innovation Horizon 2020 under grant agreement 731112 and coordinated by CERIC