Fox ESS Energy Cube ECS4800 Slave: Expand Your High-Capacity HV Battery System by 4.74kWh

Increase the energy storage potential of your Fox ESS system with the Energy Cube ECS4800 Slave Battery. This high-voltage (HV) module seamlessly integrates with your existing ECM4800 Master unit, adding a substantial 4.74kWh of nominal capacity. By expanding your battery energy storage, you can capture more surplus power from your solar panels, further reducing reliance on the grid, mitigating the impact of high energy tariffs, and enhancing your home's energy resilience.

Boost Your Storage with Safe LiFePO4 Technology

Each ECS4800 Slave module contributes an additional 4.74kWh (nominal capacity at 1/3C, per datasheet details) to your setup, utilising the same safe and durable LiFePO4 prismatic cell technology as the master unit. This allows you to store significantly more energy for overnight use, backup power, or maximising self-consumption when paired effectively with your solar inverter.

Effortless System Expansion

Designed for simplicity, the ECS4800 Slave module stacks directly onto your existing Fox ESS Energy Cube 4800 series battery system (controlled by the ECM4800 Master). The 'plug and play' nature described for the system makes adding capacity straightforward for qualified installers. You can add up to six slave modules to one master, allowing for a highly customised total system capacity reaching up to 33.24kWh, as outlined in the technical documentation.

Reliable Performance in a Modular Design

Maintain the high performance and reliability of your Fox ESS system. This slave module operates within the same specifications as the master regarding efficiency (>95% round-trip), depth of discharge (90%), and cycle life (≥6000 cycles). The overall system retains its IP65 rating, ensuring robust protection whether installed indoors or outdoors. Ensure appropriate solar cabling is used for inter-module connections.

Why Evergy Recommend This Product

The Fox ESS ECS4800 Slave module is the ideal choice for expansion because:

• It provides a significant 4.74kWh capacity boost per module.
• It uses the same safe and reliable LiFePO4 technology as the master.
• Its modular, stackable design allows for easy integration and scalability.
• It maintains the high performance and durability standards of the Fox ECS system.

Technical Highlights (Per Slave Module)

Based on the ECS4800 series datasheet:

• Module Type: Slave Expansion Module (CS4800)
• Nominal Capacity (Module): 4.74 kWh (at 1/3C)
• Cell Technology: LiFePO4
• Compatibility: Requires ECM4800 Master and compatible Fox ESS Inverter

Note: Adding slave modules increases total system capacity and weight, and affects operating voltage. Consult the datasheet for system limits and specifications.

Upgrade Your Fox ESS Storage Capacity

Easily increase your home's energy storage by adding one or more Fox ESS ECS4800 Slave modules to your existing system. Ensure your mounting surface can support the additional weight. Explore compatible Fox ESS inverters or browse our full range of solar batteries.