Weasil
I'm not sure if the battery idea was 'tongue in cheek' or not.
If not then I some really light batteries would need to be invented as such batteries would now burn up to 4% per hour of their mass in fuel just for the privilege of being flown around. (As well as the electric motors) In addition kerosene would be burnt in supplying the charge to the batteries.
Any extra mass would also reduce the available payload on a limiting sector which would be a difficult one to sell to the A380 engineers just now.
Just my thoughts.
Regards
Exeng