It’s impossible to say, but if we assume it’s a typical Li-ion battery supplying 3.7V, then:

9 kAh x 3.7 V = 33.3 kWh

So, it would be enough to power the average American house (10 kWh/year) for 3.3 years, or 11.1 years for a typical European flat (3 kWh/year).

Dacia is a small Romanian brand with a single plant, so learning that some are rebranded Renaults from China is quite surprising.

I looked up the Dacia Spring and it says, that it’s manufactured in China.

Every German corporation that was around back then had ties to the Nazis, especially anything industrial. As one can see in the US at the moment, corporations swim with the tide. Most of these companies succeeded despite the Nazis, not because of them, with obvious exception being VW.

German cars come from Carl Benz, who built the first automobile in 1885, four years before Hitlers birth.