I realized how the capacitor is kinda bad at its current state, you place 3x batteries in, and out comes 1x. Not only that, they just still need crew to carry them to the desired location.
So the idea is, to have a 3x3 capacitor, that not only has more storage, but also outputs 2x batteries. Maybe there can also be the wireless power transfer like the engine room but idk about that one.