Lithium Battery are already enough to power some airplanes. Airplanes now in development using current battery tech are already targeting many niches. They wil

Lithium Battery are already enough to power some airplanes. Airplanes now in development using current battery tech are already targeting many niches. They will not fly across oceans for a while but a lot of aviation is limited to one continent. And beyond that, the cheaper operational cost, can change how flights routes significantly and even open more markets. The problem with airplanes is partly that it takes a very long time to design a new one and the cost are significant. To create a longer range electric plane, you need to really start from the ground up, and rethink the airplane. Even with cars this took 10-15 years. For planes it will be even more difficult.