Lithium-ion batteries have consolidated their leadership in the market due to their high energy density and cycling stability, but concerns about the environmental impacts of their constituent materials have opened the door to investigating alternative technologies. BATTERIEdigital® has developed a Digital Cell Designer based on performance parameters of specific cell types and the respective cell chemistry to compare the performance potential and environmental footprint of novel battery cell technologies with established cell systems (e.g. lithium-ion). The developed model offers a user-friendly analytic tool for performance and ecological comparison batteries with different TRL. This integrated model makes use of life cycle environmental impact data of constituent materials of metal-ion batteries up to the cell level. In addition, the energy and power densities of the cell are estimated according to theoretical models. With this approach, the ecological comparison between batteries with different Technological Readiness Levels (TRL) becomes more objective by avoiding the progress factor playing a role. Furthermore, the cell components with large environmental impacts can be directly identified to take early action before the cell’s TRL grows to higher levels. The results exemplify how the integrated model can be used as a decision support tool for researchers, companies, and policy makers to optimize low-carbon technology designs from various perspectives.