Interesting ! !  On page 17 notice the SS Cell energy density is stated to be between 1-- & 1500 Wh/L.  To compare this to the Infinity cell which has 350 Wh/Kg you have to compare Apples to oranges so I will do it for you.  350/750 = X/1200.  Solving the ratio & proportion yeilds 583.333 Wh/Kg.  So just like Electrovaya states about twice the energy density as the Infinity cell.  The presentation states between 1000 & 1500 Wh/L so I used 1200 in the calculation to be conservative.