Hi every one
Now I have read everything I can find about Smart Battery Protect on battery side of MPPT and there are people who write it will work, and there are people who write it does not work, and the whole house will burn down.
So Victron who is right, I have found this drawing, where Victron uses it in just this way.
Best regards JensUS-VAN-Drawing-VEBus-BMS-MultiPlus-3KW-DMC-400Ah-Li-Cerbo-SBP-100A-&-65A-SmartShunt-MPPT-100-50-OrionTr.pdf