alt Hacker NewsI think an interesting aspect is that on normal aircraft fuel tanks have to be near the center of lift to maintain weight and balance as fuel is burned off. When using batteries, this is not really a concern, and I would think might lead to some more interesting designs. To be sure, if there is space in the wing, awesome - the batteries can now also be used as ballast though too if required.
Wings can also be excellent for heat rejection - in-wing batteries have a lot of surface per unit of volume and are constantly exposed to low temperatures.
Which may result in them being too cold and you needing to spend power heating them, so someone needs to do the math on that.