The smaller the aircraft , the better electric works (drones etc) .... much larger and results diminish .... something to do with molecules of air on a small propeller at high rpm .... compared to larger blades at lower rpm. (small works better)
The real drawback is battery weight of course.
Using Old school lead-acid batteries you needed 500 lbs of battery to equal the energy of one gallon of gasoline
Modern laptop type batteries are better , maybe 300 pounds or so.
But even more problematic is the machine ends up carrying a lot of dead weight (dead batteries) as the trip progresses.
Whereas gasoline is consumed during the trip and the machine progressively becomes lighter.
Take Tesla for example ... they claim up to 300 mile range under moderate driving , but by the end they are still carrying thousands of pounds of dead weight of now useless battery ... which requires many hours to recharge ..... whereas a normal car you just add a couple of gallons of compact light weight gasoline and come home.
Gasoline is a very low cost until our governments add all the taxes . It is a very potent form of energy , pretty hard to beat , there is lots of it and it is safely distributed everywhere .