FOX ESS: H1- 11.4-US 11.4kW Hybrid Inverter 3 MPPT, WIFI Included FOX ESS: AC1- 11.4-US + 20kWh Battery + Hub AC1-11.4-US + 20kWh Battery + Hub FOX ESS: Battery Packages 8kWh Batteries 8kWh Batteries Expand your system easily by simply adding additional batteries. There are six battery size options, and seven batteries can be installed in series, providing up to 27.8 kWh of storage capacity. EASY INSTALLATION HIGH VOLTAGE TYPE 4X REMOTE MONITORING Flexible configuration, plug and play set-up. Compatible with high-voltage batteries for maximum round-trip efficiency. Engineered to last with maximum flexibility. Suitable for outdoor installation. Monitor your system remotely via smartphone app or web portal.