For a direct conversion you could just look at the Alpha Electro https://en.wikipedia.org/wiki/Pipistrel_Alpha_Trainer#Alpha_Electro https://en.wikipedia.org/w

For a direct conversion you could just look at the Alpha Electro https://en.wikipedia.org/wiki/Pipistrel_Alpha_Trainer#Alpha_Electro https://en.wikipedia.org/wiki/Pipistrel_Alpha_Trainer#Alpha_... 324 nmi range for the regular variant. Around 65 nmi for the electric version. This is with older batteries, probably with very bad pack-level energy density. The battery pack can even be swapped. Great to avoid having to wait for charging, but probably terrible for weight. If you design the aircraft for electric flight from the ground up (see Maxwell X-57 for how you could do that), with a structural battery pack, and with 300-500wh/kg batteries, I'm willing to bet a 2-5 times increase in range is viable.