Ultra-Tech Classic VS 4e

[Stormcrow]

Originally Posted by onetrikpony

I think that E & F size power cells in UT (4) are a different technology than the smaller cells.

Power cells "may be advanced electrical batteries, micro fuel cells, superconductor loops, or even more exotic power supplies." In other words, the technology on which they are based is up to the GM. If you want to explain the different weight progression as a different technology for the larger sizes, that's fine, but it could just be a single technology that doesn't scale according to a simple logarithmic curve.