All prices shown are the out-of-pocket cost after applicable rebates have been applied. The most advanced inverter with a VPP battery plan — capable of exporting 5kW while simultaneously powering a 5kW household. A unique feature and the first of its kind. The Fox ESS EQ4800 is a high-performance, scalable battery storage system. The modular design allows for maximum flexibility, making it suitable for a broad range of storage applications. Additional batteries can be installed in series, allowing for a maximum storage capacity of 41.93kWh. Installation is easy, with a plug and play solution that can save valuable time for installers. System comes with 5kW inverter. 4.66kWh capacity > Scalable to 41.93kWh 100% Depth of Discharge Large temperature tolerance CAN communication