System Overview
The Fox ESS CQ6 is a high-performance, scalable battery storage system designed for residential and commercial energy storage applications. Its modular high-voltage architecture provides maximum flexibility for a wide range of storage scenarios, while plug-and-play installation helps save valuable installation time. The CQ6-L7 configuration delivers 41.93kWh nominal capacity, making it an ideal choice for users requiring larger energy storage capacity with reliable long-term performance.
Key Features
41.93kWh nominal energy in CQ6-L7 configuration
Scalable system architecture up to 83.86kWh
90% Depth of Discharge (DoD) for high usable energy
LiFePO₄ battery chemistry for improved safety and stability
CAN communication for reliable inverter and system integration
Large operating temperature tolerance for demanding applications
IP65 protection for indoor and outdoor stand installation
Plug-and-play modular design for easy and efficient installation
Technical Specifications
Electrical Characteristics
| Model | CQ6-L7 |
| Battery Type | LFP (LiFePO₄) |
| Battery Module (CQ6-M) | 6 |
| Battery Module (CQ6-S) | 1 |
| Nominal Capacity [kWh] | 41.93 |
| Nominal Voltage [V] | 403.2 |
| Operating Voltage [V] | 104.4 ~ 919.8 |
| Recommend Charge/Discharge Current [A] | 50 |
| Max. Charge/Discharge Current [A] | 100 |
| Peak Discharge Current [A] | 110 @60sec |
| Battery Pack Round-Trip Efficiency [%] | >95 |
| Depth of Discharge [%] | 90 |
| Communication | CAN |
| Display | CQ6-S: LED*1, CQ6-M: LED*6 |
| Scalability | Max. 14 Modules in Series |
Operating Conditions
| Installation Location | Outdoor / Indoor (Stand) |
| Operating Temperature [°C] | Charge: 0 ~ 55, Discharge: -10 ~ 55 |
| Operating Temperature [°C] (warm up function on, optional) | Charge: -25 ~ 55, Discharge: -25 ~ 55 |
| Storage Temperature [°C] | -10 ~ 50 |
| Cooling Method | Natural Convection |
| Humidity [%] | 5 ~ 95 (No Condensation) |
| Altitude [m] | Max. 3,000 |
Protection
| Fire Protection Function | YES |
Mechanical Characteristics
| Dimensions (W*D*H) [mm] | 660*360*1195 |
| Weight [kg] (±5%) | 355.2 |
Certifications & Standards
| Safety | IEC 62619 |
| EMC | IEC 61000-6-1/2/3/4 |
| Transportation | UN38.3 |
| Ingress Protection | IP65 |
Package Information
Fox ESS 5kW 1P CQ6 41.93kWh BESS Includes:
- 1 × CQ6-M Master Battery Unit (5.99kWh)
- 6 × CQ6-S Battery Modules (Total 35.94kWh)
- 1 × Fox ESS 5kW Single Phase Hybrid Inverter (H1-5.0-E-G2)
