To benchmark the fit between experiments and OPLS-AA force field MD, we first compared results from simulations carried out at the same temperature as the experimental measurement. Since the OPLS-AA MD simulation underestimate ionic conductivity and overestimate glass transition temperature, we further evaluated two correction schemes. First, we assess shifting the simulation temperature by the error glass transition temperature values from MD, effectively heating up the simulation until the polymer exhibits the experimentally correct degree of softening and flexibility. However, this correction would require knowing the experimental T g value beforehand, which is not practical to screen for novel polymers.