ROI Low-voltage stacked energy storage battery has 5kWh,10kWh,15kWh models (51.2V 100/200/300Ah). Stackable modular design supports flexible capacity expansion, compatible with 20+ mainstream inverters. Self-developed BMS ensures full cell protection, certified to IEC 62619. RS485/CAN communication with optional Bluetooth, suitable for home solar storage, commercial peak shaving and backup power.