Considering everybody talking about using these things in war it has the benefit of not being a suicide beacon visible to instruments for many many miles, unlike the microwave transmitters everybody else here want to carry with them Also see; https://www.pv-magazine.com/2024/05/09/powering-drones-with-ultra-thin-flexible-perovskite-pv-cells/ If you actually want to extend the lifetime of high performance autonomous drones in the field then it's more practical to do battery swaps