Batteries are becoming obsolete, scientists have discovered a new way to store energy, so the whole frame and body of the car is able to store energy. So we might see cars and laptops without batteries in the future.
Yes like the case around a laptop, or the body/fuselage and wings of a drone, saves weight. They showed it on the news recently.
"Structural batteries are materials that not only store energy, but can also carry loads. In this way, the battery material can become part of the actual construction material of a product, which means that a much lower weight can be achieved in electric cars, drones, hand tools, laptops and mobile phones, for example."
They claim to increase the range of an electric car up to 70%
