Can I use my X1-hybrid-G4 inverter without gird and battery?

YYes, currently only X1-Hybrid G4 and X3-Hybrid G4 support this function, and also there is software requirement as below:
Requirement for X1-Hybrid G4: ARM≥1.33 DSP≥1.34
Requirement for X3-Hybrid G4: ARM≥1.30 DSP≥1.31
For more details, please refer to this link:https://kb.solaxpower.com/solution/detail/ff808081899c15cb0189aa5b6c0001d5