def METHOD_NAME(self):
    self.entry_Li = ComputedEntry("Li", -1.90753119)
    self.entry_Ca = ComputedEntry("Ca", -1.99689568)
    with open(f"{TEST_FILES_DIR}/LiTiO2_batt.json") as f:
        self.entries_LTO = json.load(f, cls=MontyDecoder)
    with open(f"{TEST_FILES_DIR}/MgVO_batt.json") as file:
        self.entries_MVO = json.load(file, cls=MontyDecoder)
    with open(f"{TEST_FILES_DIR}/Mg_batt.json") as file:
        self.entry_Mg = json.load(file, cls=MontyDecoder)
    with open(f"{TEST_FILES_DIR}/CaMoO2_batt.json") as f:
        self.entries_CMO = json.load(f, cls=MontyDecoder)
    self.ie_LTO = InsertionElectrode.from_entries(self.entries_LTO, self.entry_Li)
    self.ie_MVO = InsertionElectrode.from_entries(self.entries_MVO, self.entry_Mg)
    self.ie_CMO = InsertionElectrode.from_entries(self.entries_CMO, self.entry_Ca)