Solplanet 5.12kWh Stackable Master Battery with Ground Mount Kit (Ai-LB-G3)Solplanet Ai LB G3 Stackable Battery Master Module Fully power your energy storage setup with the Solplanet Ai LB G3 Master Module. This sleek, powerful, and future proof battery module performs flawlessly on its own or as the central hub in a scalable tower configuration. Why Choose the Master Module Ready for Expansion Fast Stackability: Easily expand your system by adding up to three additional Ai LB G3 slave modules (totaling 4 modules, up to ~20.