Before revision:  The use of exclusively abundant materials with comparably low environmental impacts within the cell is the major strength of the  MgS battery , leaving the energy-intensive process steps as the remaining critical contributors to the total environmental impacts i.e., the cell manufacturing and magnesium and aluminium metal production.
After revision:  Therefore, if the assumed evolutions of the MgS battery , leaving the energy-intensive process steps as the remaining critical contributors to the total environmental impacts i.e., the cell manufacturing and magnesium and aluminium metal production.