97-218-00034-00 Fox ESS Standalone Master Battery Module CM4000

Fox ESS Standalone Master Battery Module CM4000

The Fox ESS CM4000 is the master battery module for Fox ESS standalone energy storage systems. Providing 4kWh of lithium battery capacity, it serves as the primary control and communication unit in a standalone battery stack — managing charge/discharge cycles, cell balancing, and system communication. Additional CS4000 slave modules can be added to expand total system capacity.

Key Features

• 4kWh lithium battery capacity — scalable energy storage for residential systems
• Master module — primary control and communication unit for standalone battery stack
• Expandable — add CS4000 slave modules to increase total capacity
• Integrated BMS — built-in battery management system for safety and longevity
• Compatible with Fox ESS inverters — designed for Fox ESS ecosystem

Specifications

• Capacity: 4kWh
• Module type: Master (CM)
• Chemistry: Lithium
• Compatible with: Fox ESS H1 hybrid inverters

Ideal For

• Residential solar + storage installations
• Fox ESS standalone battery system builds
• Homeowners requiring scalable energy storage
• New and retrofit solar installations

Ships from Thunder Battery — Canada's trusted energy storage dealer.