Originally Posted by
DaveReidUK
I think you'll find the poster's 400 kW was for two engines (446 kW rounded down).
Yours (197 kW x 2) comes to 394 kW, so we're splitting hairs here.
My bad! I also completely mucked up the calculation, the 15 minute trip would actually require 73.875 kwhr and 30 mins reserve would be 194 kwhr, giving total weight of ~1200kg which is definitely prohibitive.