So my decision was the purchase of the Canon 70D clearly towards original battery grip. As with Canon usual I received excellent quality. The handle fits and works straight away, as it was then defects in the no-name battery grip do not occur.
Ber battery grip is wertig, the camera can very well keep it and use. I can only recommend, to spare himself the higher financial expense and then to acquire the original part. I any case proceed in the future that way.