WP2 WP2 Design of Experiments, boundary conditions and methodologies: D2.1 Use case specific battery testing boundary conditions and DOE methods.D2.2 Definition of battery system testing for automotive, off-road and stationary use cases.D2.3 Concepts for smart combination of physical and virtual testing. WP1 - Specifications, requirements and use cases definition Link WP2 - Design of Experiments, boundary conditions and methodologies. Link WP3 - Advanced battery ageing and performance modelling Link WP4 -Battery safety and reliability AI-powered toolchain Link WP5 - Digital Twins for Hybrid Test in Battery Development Link WP6 - Development of hybrid testing platform Link WP7 - Dissemination, Exploitation and Communication Link WP8 - Coordination and Management Link