The Fourth China Energy Storage Engineering Conference & China-Japan Battery Seminar was held in Hefei, China, from 13th to 15th, July 2018. ERCN as co-organizer joined this conference. Prof. Jingwei Zhang and associate professor Jiwei Zhang are invited to make speeches about energy storage at the conference. The theme of this conference focused on promoting the exchange of energy science and technology, promoting the application of basic research, and training young talents for energy storage.