Jose wrote:

Consider that a Cessna 150 can fly for perhaps 3 hours, at 75% power.
To get the equivalent range with batteries would require about 3,000
lb. of batteries, which would be totally impractical for an aircraft
that now grosses at 1,600 lb.

How about fuel cells?

What kind of fuel?

Liquid hydrogen tanks are something like 4 times the volume of avgas tanks
for the same energy. Where would you put them? Compressed hydrogen takes
even more space.

They also weigh substantially more, because of the need to contain and
insulate the hydrogen. Given the limited useful weight in a C150, adding
weight would be unproductive, if not impractical.