In reality, it's 5x worse than current LiIon tech(from the same article): > The battery has an energy density of 24 Wh/kg, meaning approximately 20 percent cap

In reality, it's 5x worse than current LiIon tech(from the same article): > The battery has an energy density of 24 Wh/kg, meaning approximately 20 percent capacity compared to comparable lithium-ion batteries currently available. But since the weight of the vehicles can be greatly reduced, less energy will be required to drive an electric car, for example, and lower energy density also results in increased safety. And with a stiffness of 25 GPa, the structural battery can really compete with many other commonly used construction materials. This seems a bit more believable. Whether it'll actually be used in that manner is to be seen, but this seems more down to earth. And while the article seems to put emphasis on using it to save weight, it's probably more effective to use it to add capacity while maintaining weight.