>Density 1.8x to 5x liquid electrolyte But if that is still less dense than say, a lead-acid battery, but with double the performance of a li-on/polymer batter

>Density 1.8x to 5x liquid electrolyte But if that is still less dense than say, a lead-acid battery, but with double the performance of a li-on/polymer battery, is that not still an improvment?