I would view that 11kg with scepticism. I have a Park Tool bike weighing ‘gizmo’ and over the years have never found a bike that weighs what the manufacturer claims. When pressed one manufacturer admitted they weigh the smallest frame, no pedals, no bells, bottle cages, lights (reflectors) even though these have to be fitted by law.The auxiliary battery has not yet been released and there is no outlook for availability. I contacted them April 2019.
We shouldn’t be surprised really, think vehicle mpg and Nox claims.