Lithium Propulsion: Hype vs. Reality in Aviation and Marine

This article debunks the hype surrounding lithium-ion battery propulsion systems for aircraft and boats. The author argues that the technology's energy density is significantly lower than traditional fuels, resulting in massive energy consumption throughout its lifecycle, excessively long charging times, and impractical payback periods. In many regions, the carbon footprint is even higher than conventional systems. Profitability remains elusive unless battery energy density increases dramatically, grid carbon intensity decreases significantly, and fast-charging technology makes a breakthrough.