Actually a CORDED weed eater is fine for trimming until you get the big woody stemmed weeds.
A corded electric lawnmower is fine for small yards.
A corded electric chain saw cuts just fine.
I have all three and use them when the job suits.
But for big jobs or beyond the reach of extension cords it is gasoline power equipment that gets the job done.
Propane/LP gas cars make more sense than electric but are also impractical without a widespread network of convenient fueling stations
A battery bank the size and weight of your ordinary car gasoline tank can’t yet store a comparable amount of energy.
Energy is always lost in conversion from one type to another.
Electric cars are a fantasy dream of collectivists.
Lets just say that the difference in your small yard and my larger property is equivalent to the difference between driving 4 miles to work and driving 25 miles to work.
If I have a really small yard, I might consider an electric mower...as I might consider an electric car if I only drove a few miles to work...in a sunshine state...and I had another car in case I wanted to take a day trip somewhere.
But that’s a lot of caveats.