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FoxESS CQ7-S High Voltage Storage Battery 7.02 kWh LiFePO4
The FoxESS CQ7-S is the slave module of the CQ7 high voltage storage system, with LiFePO4 (LFP) cells and a nominal energy of 7.02 kWh per module at 115.2 V. The CQ7 adopts a master/slave architecture: the tower always starts from a CQ7-M master module, which integrates the system control, to which up to 13 CQ7-S slave modules connected in series are added.
The system is scalable from 14.04 kWh to 98.28 kWh (maximum 14 modules in series) with an operating voltage range from 104.4 V to 919.8 V. The maximum charge and discharge current is 80 A, with a discharge peak of 110 A for 60 seconds; the depth of discharge is 90% and the round trip efficiency higher than 95%. The IP65 protection rating, the natural convection cooling and the integrated fire protection allow both indoor and outdoor installation; with the optional heating function the operating range extends down to -25 °C. Communication with the inverter takes place via CAN.
Key features
Technical specifications
| Feature | Value |
|---|---|
| Product code | CQ7-S |
| Model | FoxESS CQ7-S (slave module, -80 version) |
| Chemistry | LiFePO4 (LFP) |
| Nominal energy | 7.02 kWh per module |
| Usable energy | 6,32 kWh (DoD 90%) |
| Rated voltage | 115.2 V per module |
| Voltage range | 104.4-919.8 V (depending on the number of modules) |
| Capacity | Not declared in Ah (approx. 61 Ah, value derived from 7.02 kWh / 115.2 V) |
| Max charge current | 80 A (recommended 50 A) |
| Max discharge current | 80 A; peak 110 A for 60 s |
| Charge/discharge power | Approx. 9.2 kW continuous per module (80 A at 115.2 V) |
| Depth of discharge (DoD) | 90% |
| Modules per tower / scalability | Max 14 modules in series (1 CQ7-M master + up to 13 CQ7-S slaves): from 14.04 to 98.28 kWh |
| Compatible inverters | FoxESS H1, H3 and H3 Plus series hybrid inverters |
| Communication | CAN |
| Protection rating | IP65 |
| Operating temperature | 0-+55 °C; -25 to +55 °C with optional heating function |
| Humidity / Altitude | 5-95% non-condensing; up to 3,000 m |
| Round-trip efficiency | Above 95% |
| Dimensions (W x D x H) | 660 x 360 x 190 mm |
| Weight | Approx. 50 kg |
| Cycle life | Not declared in the datasheet |
| Warranty | 10 years (stated by distributors, not in the datasheet) |
Documentation
PDFDatasheet CQ7-SOfficial manufacturer documentPlease check compatibility with your inverter and with the other modules in the tower before ordering. Installation must be carried out by qualified personnel in accordance with the applicable standards.