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FOX ESS CQ7-V6M (W) – 6.96kWh Battery Module Master (Winter Version)

The FOX ESS CQ7-V6M (W) is the master battery module for the FOX ESS CQ7 high-voltage residential energy storage system, specifically engineered for cold-climate applications. Combining an integrated Battery Management Unit (BMU), system controller, and a 6.96kWh Lithium Iron Phosphate (LFP) battery module within a single unit, the CQ7-V6M (W) serves as the central control and communication hub of the entire battery stack and is required once in every CQ7 battery system.

Designed to deliver reliable energy storage performance in challenging environmental conditions, the Winter Version features an integrated battery heating system that enables charging and discharging operation in temperatures ranging from -25°C to +55°C. This enhanced cold-weather capability makes the CQ7-V6M (W) particularly suitable for installations in alpine regions, frost-prone inland areas, and colder climates where conventional battery systems may experience reduced performance.

Built with advanced Lithium Iron Phosphate (LFP) technology, the CQ7-V6M (W) provides exceptional safety, thermal stability, long service life, and high energy efficiency. The system supports 100% Depth of Discharge (DoD), allowing users to maximize the usable energy available from the battery and improve overall system value.

The master module includes comprehensive system monitoring and management functions through CAN-bus communication, while a six-LED status display provides clear visual indication of operating conditions and battery status. Its robust IP65-rated enclosure ensures reliable performance in both indoor and outdoor installations, protecting the system against dust, moisture, and harsh weather conditions.

When paired with compatible FOX ESS hybrid inverter systems and additional CQ7 battery modules, the CQ7-V6M (W) forms the foundation of a scalable and high-performance residential energy storage solution designed to maximize solar self-consumption and energy independence.

Key Features

• Master battery module for FOX ESS CQ7 high-voltage battery systems

• Integrated Battery Management Unit (BMU) and system controller

• 6.96kWh Lithium Iron Phosphate (LFP) battery capacity

• Winter Version with integrated battery heating technology

• Operating temperature range from -25°C to +55°C

• Designed for cold-climate and frost-prone installations

• 100% Depth of Discharge (DoD)

• High-voltage battery architecture

• CAN-bus communication and system monitoring

• Six-LED status display for system diagnostics

• IP65-rated enclosure for indoor and outdoor installations

• High safety, reliability, and long cycle life

• Scalable modular energy storage platform

• Optimized for residential solar energy storage systems

Technical Specifications

Designed for Cold-Climate Energy Storage

The FOX ESS CQ7-V6M (W) is specifically developed to provide dependable battery performance in environments where low temperatures can affect charging efficiency and battery operation. Its integrated heating technology maintains optimal battery conditions, allowing homeowners in colder regions to benefit from year-round energy storage without compromising performance.

As the core component of the CQ7 battery system, the CQ7-V6M (W) delivers intelligent control, advanced protection, and scalable storage capacity, creating a reliable and future-ready solution for residential solar energy storage applications.