That company made this same setup for the Solo.
They replace the battery with some kind of power module and then send high voltage up the line. That way they can use very small wire. And the only conversion to your H or solo is to swap out the battery. Great idea but it does not come cheap. I thought the solo unit was around $1000. I did read or hear somewhere that they had a solo in the air for something like 30+ days and only brought it down because of bad weather.
I think the motors will overheat especially during sunny hot weather, recently I flew two battery's straight after each other just down to 14.6 volts and landed and three of the motors were very hot to touch, the outside shade air temperature was 30c, also I noticed the top of the H plastic body where the GPS is located was very hot as well..
Strange in my experience the smaller the gauge of wire would cause a significant drop off in volts over the length they state in their spec, I cant imagine them selecting any thing other than copper core cable due to the lowest resistance copper offers, I could foresee the cable itself getting warm or even hot in use.