Ideally, a hypothetically perfect cell should consist of a positive electrode and a negative electrode, both made of 100 % of AM and should hold the same electrode capacity with a thin layer of solid electrolyte separating them, which allows ions to be transferred between the two electrodes (Figure ). But practically, a significant amount of "deadweight" is added to the cell due to physical limitations while designing a cell . In reality, the AMs are, generally, not conductive enough to enable efficient charge (ionic and electronic) transport to and from the electrode. So, an electronic conductive additive, an appropriate AM particle size, and a current collector are required to ensure sufficient electronic transport in the electrode . Similarly, to ensure sufficient ionic transport, the electrode requires a minimum porosity to ensure complete liquid electrolyte percolation and a suitable AM particle size is required to have sufficient reaction kinetics . Also, a porous separator impregnated with a liquid electrolyte is required to ionically connect the two electrodes, and it should be thick enough to improve safety and have sufficient mechanical strength to withstand the manufacturing operations of the cells . Further, binders and current collectors are required to hold the electrode components together and distribute current uniformly through the electrode, respectively . Also, a higher amount of AM and electrolyte than the theoretical requirement is needed to account for the initial Solid Electrolyte Interphase (SEI) formation and achieve the desired cell capacity . Additionally, a slightly higher capacity of AM in the negative electrode is necessary to prevent lithium plating in the negative electrode during the cell's life cycle . Aside from the limitations posed by the material properties, there are also limitations set by the process parameters. For the wet processing of the electrodes, the electrode formulation and the thickness are also limited by the rheology of the slurry . The final electrode porosity is controlled by the calendering step, where reducing the roll gap makes it increasingly hard to compress the material further . Apart from maximising energy density, it is also important to maximise the power density of the cell. This further limits the maximum achievable energy density of the cell since the optimal parameter values required for high power density are usually diametrically opposed to the values required for high power density . One such example is the thickness of the electrode. For achieving high-power density, the electrode should be thin, whereas, for optimising energy density, thicker electrodes are preferred. Thinner electrodes require the electrodes to be longer to achieve the same capacity as a thicker electrode, which increases the weight of electrochemically inactive materials, such as the current collector and separator in the final cell, reducing the final gravimetric cell energy density. The aim of our BMM is to enable students (and users in general) to learn and understand all these complex concepts in an immersive, interactive and collaborative environment.