The build quality of this part is very good. The overall grip and the batteries seem stable.
The Li-ion batteries last just as long as the more expensive originals of Canon. The camera detects the batteries and the battery indicator is working properly. The battery can be easily loaded from the original charger.
The battery grip fits perfectly on the 6D. This grip allows the camera to better attack (especially in people with big hands). The only small downside is that the Verschlusszeiteinstellrad and the trigger while pressing a little annoying "Tack" sound is temporarily produced.
Delivery: All three parts were, as usual, Amazon, delivered very quickly and were well packaged.
The price-performance ratio of this (Nachbau-) battery grip with two (Nachbau-) batteries is really top.
I can make this purchase really any, whether amateur or professional, recommended.