Prismatic Battery Cell and Method of Making the Same

A prismatic battery cell and method of making the same are disclosed. The prismatic battery cell comprises a container configured to accommodate the prismatic battery cell, including a positive electrode, a negative electrode an ionically conductive separator, and an electrolyte. The positive electrode comprises a lithium manganese iron phosphate active material combined with a conductive carbon additive and a binder. The prismatic battery cell further comprises a lid, a first busbar, a second busbar, a positive electrode terminal attached to the first busbar, and a negative electrode terminal attached to the second busbar.