>aircraft spend a much larger proportion of their journeys operating at high power levels. Luckily the high power level is maintained at reliably high speed [0

>aircraft spend a much larger proportion of their journeys operating at high power levels. Luckily the high power level is maintained at reliably high speed [0], ensuring airflow for cooling. Even better, aircraft by its very long-range nature will have much larger battery:engine ratio. For example this 2018 article [1] discusses airplane with 9x the Tesla's battery capacity and 3x the Tesla's engine power, in other words, its batteries would need to handle only 1/3rd electrical load as much at peak load (per unit). The lower power density[2] of the battery pack again provides for easier cooling; perhaps even passive cooling or air cooling instead of forced liquid cooling. Whereas Tesla's sustained performance is limited by battery pack thermals. Lastly, it's worth noting the ICE aircraft engines are "overbuilt" as compared to the roadgoing ones, mostly for sake of reliability. -- [0] aside of the engine run-up and initial acceleration, but both of those are short anyway [1] https://news.ycombinator.com/item?id=18602771 https://news.ycombinator.com/item?id=18602771 [2] not to mix it up with energy density