so I finished my build with some modifications to the original post. For the battery I used two Turnigy 5S1P 1300mAh Graphene Lipos in series and and bought a complete VESC 4.12.
I did the motor measurements with a 15V power supply some time ago before I got the battery so I plugged in a rc remote for testing and spun the motors after setting up the remote. After spinning them for 10s without any load I tried it again and it didn´t work. DRV8302 fault
Any important settings to make the VESC work with my new DRV chip and 10S 245kv setup?