Now a days we have two options for storing of electrical energy i.e. battery and supercapacitor. But the major disadvantages of batteries are required more time for charging hence lot of research is going on the supercapacitor. Supercapacitors are charge quickly, have high energy density high power density and low cost. But the disadvantage is discharge quickly. The technical combination of battery and the super capacitor introduced a new device called hybrid-ultra capacitor. The paper focuses on parameters and formulaes required to design the hybrid supercapacitor.