code: def _get_max_cap_ah(self, remove, insert):
          
          num_cations = 0
          if remove:
              num_cations += self.max_cation_removal
          if insert:
              num_cations += self.max_cation_insertion
  
          return num_cations * self.cation_charge * ELECTRON_TO_AMPERE_HOURS
docs: Give max capacity in mAh for inserting and removing a charged cation
          This method does not normalize the capacity and intended as a helper method