Fox ESS ECS4000 Battery CM4000 | Master LFP Stackable Batteries With Full Capacity 3.975kWh
- Stackable design, plug and play setup
- High efficiency: 6000+ cycles@90%DOD
- Expandable system, flexible customize to 19.87kWh
- BMS and cable set build-in, no wring cable needed
- IP65, indoor or outdoor installation
- 12.5 years warranty
See the specs >
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The CM4000 is the controller module in the modular ECS4000 battery system. It comes paired with CS4000 slave modules to form high-voltage battery stacks.
Features
The FOX ECS CM4000, as part of the scalable ECS4000 lineup, offers:
- Modular scalability: Build systems from ~4 kWh up to ~28 kWh
- High-performance LiFePO₄ chemistry: Long life, safe, stable
- Efficient & certified: >95% round-trip efficiency, UL/IP65 rated
- Plug-and-play: Easy installation with CAN communication and LED indicators
- Durability: Outdoor-rated, 6000+ cycles, 12.5-year warranty
System Configurations (ECS4000 Series)
| Modules (1 CM + N CS) | Capacity (kWh) | Nominal Voltage (V) | Voltage Range (V) |
|---|---|---|---|
| H2 (1 + 1) | 7.95 | 115.2 | 97.2–131.4 |
| H3 (1 + 2) | 11.9 | 172.8 | 145.8–197.1 |
| H4 (1 + 3) | 15.9 | 230.4 | 194.4–262.8 |
| H5 (1 + 4) | 19.9 | 288 | 243–328.5 |
| H6 (1 + 5) | 23.8 | 345.6 | 291.6–394.2 |
| H7 (1 + 6) | 27.8 | 403.2 | 340.2–459.9 |
Use Cases
- Residential backup and time-of-use load shifting
- Off-grid or grid-connected systems with Fox ESS H1 inverters
- Scalable energy storage: Start small and expand up to ~27.8 kWh
- Outdoor or indoor installations for homes and small businesses
Shipping and Packaging
- The battery can only ship via freight truck
Download
Datasheet
FoxESS ECS4000 Datasheet
User Manual & Installation Guide
FoxESS ECS4000 User Manual
FoxESS ECS4000 Installation Quick Guide
Certification
Fox ECS4000-UL-9540A
HUB &WiFi
Fox Hub-G2 Datasheet
Fox Smart WiFi Datasheet
FoxESS Cloud User Manual
About FOX ESS
FOX ESS is a leading provider of advanced energy storage solutions that empower customers to optimize their energy usage, reduce their carbon footprint, and enhance their energy independence. Founded in 2016, 15% of FOX ESS staff are engineers with a core R&D center base in Shang Hai. FOX ESS has developed a wide range of energy storage products and services that cater to the needs of various industries, including residential-use, utilities, commercial and industrial customers. FOX ESS is committed to delivering innovative, reliable, and cost-effective energy storage solutions that meet the evolving needs of the energy market. With a global team of experienced engineers and energy experts, the primary markets of FOX ESS include Germany, Italy, the UK, Brazil, Poland, and the US.
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