After 1 hour play "bursts" of an AA-cells (brand battery) and Toys defective

For 10 EUR one can not expect the world, but I expect if "BOSCH" is on a licensed toys that the least good quality.
Just as my son with joy "bounced" as he tore open the wrapping paper, so it was sad when the "greatest" gift for about 1 hour broke.

I noticed during testing that the "battery" was pretty hot, then I looked to the cells and saw that the "last" cell of the series had burst => Permanent short circuit?

After opening, I can confirm that by the dissolved Clockwise and anticlockwise rotation switch a continuous short-circuit was that made by burning the motor.

Incredible! Actually, a case for the protection of consumers love Theo Klein GmbH ... If you're shopping in Hong Kong already Billigstware, then please with "ö" Write Bosch.

Never again Theo Klein Toy.