[fragmede]

Pedantically, the batteries do weigh less when depleted. Not enough to make any sort of difference, but E=MC^2. We're talking micrograms for a battery the size used here. Doesn't invalidate the point that electric airplanes can't work effectively with current lithium-poly battery technology though.

[0xffff2]

You're right, that's so pedantic it's really not worth mentioning.