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