The stator is not laminated in DC machines because it does not need to be laminated.
Lamination is used in AC machines to prevent eddy currents from generating excess power due to the transformer...
Ac machines run on alternating current, cannot be run on Batteries which are of course D.C. and have certain special adaptations to the AC power source which in the US is ll0-l20 Volts at 60 Cycles...