https://www.pytesess.com/High-Voltage-Battery/ST20.html https://www.pytesess.com/industry/Stackable-energy-storage-system-Revolutionizing-residential-and-commercial-use.html ST20 Stackable High Voltage Energy Storage System, the newly developedsystem provides easy installation to make everything more efficient than ever. The stacking system provides flexible configurations from 204.8V to 512V voltageand 10.24 kWh to 25.6kWh capacity. Smart Energy Control Box on Top Scalable Up to 20 kWh (4 modules) per Stack Compact Brick-shaped Modular Design, Easy Installation, Save Labor Costs Elegant Modern design, High Protection Suitable for Indoor & Outdoor Installation Cost-effective Especially Applicable to High Electricity Price Areas & High Subsidy Areas