Fox ESS CQ7 SLAVE Solar LiFePO4 Battery | High Voltage Battery Storage Expansion Module for Solar | Commercial LiFePO4 Battery System | Modular Rack Mounted BESS [PRE-ORDER]

PRE-ORDER SALE - Estimated November 2026 Arrival DOWNLOADS: Datasheet Certifications are pending and estimated for Nov 2026 Expand your solar energy storage system with the Fox ESS CQ7 High Voltage Lithium Battery Slave Unit, designed specifically as an add-on module for compatible Fox ESS master battery systems. This modular LiFePO4 battery is not a standalone unit. It functions as a slave battery, working in conjunction with a master controller to scale your total storage capacity. Engineered for residential, commercial, and hybrid solar installations, the CQ7 slave module allows you to increase system capacity up to 98kWh with high round trip efficiency and seamless integration. Its plug-and-play design ensures fast installation while maintaining system stability, making it ideal for expanding existing energy storage setups, reducing grid reliance, and ensuring reliable backup power during outages. KEY FEATURES: Slave Battery Module for System Expansion Designed to operate with a compatible Fox ESS master unit. This module cannot function independently and is used to expand total system capacity. Expandable High Voltage Battery System Add 7.02kWh per module and scale up to 98kWh. Grow your storage system as energy demands increase without replacing existing infrastructure. Can connect up to 14 battery modules (1 master + 13 slave) in series Can connect up to 3 stacks of 14 battery modules per Fox H3 Plus Inverter High Voltage Architecture for Maximum Efficiency Optimized for high voltage hybrid inverters, reducing current losses and improving overall system performance and energy yield. LiFePO4 Battery Chemistry for Safety and Longevity Delivers superior thermal stability, enhanced safety, and extended cycle life for long-term, reliable operation. 90% Depth of Discharge Utilize more stored energy per cycle, reducing the number of modules required and lowering total system cost. Plug and Play Modular Design Pre-configured for quick integration with existing systems, minimizing installation time and complexity. >95% Round Trip Efficiency Maximizes energy retention during charge and discharge cycles for improved overall system efficiency. IP65 Rated for Indoor and Outdoor Use Durable, weather-resistant enclosure allows flexible installation environments. CAN Communication for System Integration Ensures seamless communication with the master unit and compatible hybrid inverters for stable and optimized performance. Wide Temperature Operation Built to perform reliably across varying environmental conditions. TECHNICAL SPECIFICATIONS Specification Details Battery Type Lithium Iron Phosphate (LiFePO4) Nominal Capacity 7.02kWh per module Maximum System Capacity 98.28kWh (requires master + slave configuration) Nominal Voltage 115.2V scalable up to approximately 806V Depth of Discharge 90% Efficiency Greater than 95% Communication CAN Ingress Protection IP65 Cooling Method Natural convection Operating Temperature (Charge) 0°C to 55°C Operating Temperature (Discharge) -10°C to 55°C Installation Indoor or outdoor, floor-mounted Scalability Stack up to 14 battery modules in series (must include 1 master unit) Can connect up to 3 stacks of 14 battery modules per Fox H3 Plus Inverter Certifications IEC 62619, UN38.3, EMC compliant