"I checked and can confirm that you are wrong"
Before telling people they are wrong, you should "check" a little bit more.
The information is not always easy to access from "Google" and you need too look for national authorities or UL organizations to get he data.
Just to use an example I already provided, France limits single seat class 3 UL to 238kg empty weight, with a 21 kg fuel lump weight and 86kg pilot lump weight. This gets to the 345 kg MOTM. They also limit Vso to 70 km/h at MTOM.
In the case of electric propulsion, DGAC (French authority) allows to transfer the 21kg of fuel lump weight into the empty weight. Therefore maximum empty weight of single seat electric powered class 3 UL with batteries is 259kg. As you can see, this is quite different from the 600kg 45 Kts you refer to.


"I suspect your motivation for telling lies post after post is that you are GP dealer?"
I am certainly intrigued and interested by the GP15 and I have done some reverse engineering to try better understand it but, I am not a GP dealer.
I don't pretend to be always correct but I feel offended when you state I am lying. I don't mind to stand corrected if you can point to specific points which you believe are not correct.