Is there a difference between the Batemo Cells FMU and the implementation for MATLAB Simulink?

No. The Bate­mo Cell inputs, para­me­ters and out­puts are iden­ti­cal. Dif­fer­ences only arise from the fact that the dif­fer­ent sim­u­la­tion envi­ron­ments inte­grate the Bate­mo Cell FMU dif­fer­ent­ly result­ing in a slight­ly dif­fer­ent graph­i­cal user inter­face of the Bate­mo Cell.