Flachländer -> you really need to re-read the original thread. The designer of the other product (that's not you by chance?) immediately said his product was more efficient than the Igaro D1.

This was silly of him, because I then pulled the efficiency results (as I'll relink below). These are the most accurate measurements done (more so than driving a wheel). I will gladly add his unit to the results, along with the B&M USB Werk next week - he can send me one without the batteries and I'll send it back for free.

https://www.igaro.com/res/route.main.d1/efficiency.pdf