At present, electric aircraft are nonsense.

Electric cars are better than petrol cars. However, for travel, gasoline allows us to drive for the duration of the bladder, perhaps four hours for a conscientious and deliberate driver, and then after a few minutes for relief, a snack, and a full fuel tank, one can do it again, and again, even more with multiple drivers. Not so electrics. Further, we must fill the fuel tank every few hours of driving, 10 minutes once per week for most of us. On the other hand, electric cars need to be charged at any significant stop. For a 25 minute commute to work, one must recharge every evening. There are engineering solutions, but they are expensive.

I expect cars will transition to electric over a few decades, perhaps 25 years, as soon as autonomous vehicles and traffic ways become common. Electric aircraft would probably join the municipal fleets, but flights requiring over a few minutes of air time are unlikely in any foreseeable future period.

The key to my supposition is interchangeability. Autonomous vehicles will be able to stop and transfer us to a freshly charged vehicle at typical rest/relief intervals. Not so with aircraft. As described in the article, we need batteries 50 times better if we expect to do the things imagined. For aircraft, practical is probably 100 times better, and lighter. Note the 1500 tonnes of batteries he suggests. For most commercial aircraft, take-off weight is less than 500 tonnes. That is the maximum weight for the aircraft, with passengers and cargo. It is simply not possible from an engineering or economic perspective. We will be flying with petroleum liquids for decades to come.

Source: The 4th Generation | Challenges of Electrified Aviation