Fedor, your are completly right, it is a DEW Elektrotaxi. Built in Berlin-Spandau from 1926 to 1928.
We already had a puzzle about this, but this puzzle-car differs in some details (e.g. wheels, radiator grill and doors).
A total of approx. 500 copies were built, there are also said to have been some vans. Vmax: 40 km/h, vehicle weight 900 kg, and a range of
100 km (according to manufacturer). The batteries did not have to be bought, but were borrowed. "It's all been done before".
Here is your next point.