Somewhere between this and the energy density of jet fuel. These are 0.2 kWh/kg, jet fuel is 12 kWh/kg. There are some really lightweight 1-2 place airplanes th

Somewhere between this and the energy density of jet fuel. These are 0.2 kWh/kg, jet fuel is 12 kWh/kg. There are some really lightweight 1-2 place airplanes that have very short range and are battery powered. There's a pretty big chasm between where we are now and replacing 737s.