Fox ESS Energy Cube ECS2900 Slave 2.88kWh HV Battery Module

£732.95

Expand your Fox ESS Energy Cube 2900 series high-voltage battery system with the ECS2900 Slave module. Add 2.88kWh of LiFePO4 storage capacity easily to increase self-consumption and save on energy costs.

Adds 2.88kWh Capacity: Boosts your system's storage using reliable LiFePO4 prismatic cells.
Simple Expansion: Designed to stack seamlessly with an ECM2900 Master and other ECS2900 Slaves.
Plug & Play Modularity: Simplifies adding capacity thanks to the system's easy installation design.

Why We Recommend This Product: The ECS2900 Slave is the perfect, cost-effective way to incrementally increase the storage capacity of your Fox ESS 2900 series HV battery system.

SKU: ECS2900

Free and easy returns | Easy to Install | Professional Installers Available

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Fox ESS Energy Cube ECS2900 Slave: Add 2.88kWh to Your HV Battery System

Grow your home energy storage solution with the Fox ESS Energy Cube ECS2900 Slave Battery module. Designed specifically for the Fox ECS 2900 high-voltage (HV) system, this unit allows you to easily add 2.88kWh of nominal capacity to your existing ECM2900 Master setup. Expanding your battery energy storage enables you to store more clean energy from your solar panels, reducing your grid dependence, saving money on peak energy tariffs, and providing greater backup power potential when paired with a compatible Fox ESS inverter.

Increase Storage with Dependable LiFePO4 Cells

Each ECS2900 Slave module increases your system's nominal capacity by 2.88kWh, using the same safe and long-lasting LiFePO4 prismatic cell technology found in the master unit. This additional storage helps you bridge the gap between solar generation and energy consumption, making the most of your renewable energy system.

Modular Design for Easy Scalability

Adding capacity is straightforward thanks to the modular design of the Fox Energy Cube system. The ECS2900 Slave simply stacks onto your existing battery tower (managed by the ECM2900 Master). The datasheet indicates that up to six slave modules can be added to one master, allowing for a total system capacity of up to 20.16kWh. This 'plug and play' approach simplifies the expansion process for qualified installers.

Consistent Performance and Reliability

Adding slave modules maintains the high standards of the Fox ECS 2900 system. Performance metrics like round-trip efficiency (>95%), depth of discharge (90%), and cycle life (≥6000 cycles) remain consistent, as detailed in the technical specifications. The system's IP65 rating ensures continued protection against the elements. Ensure correct solar cabling is used for connecting the modules.

Why Evergy Recommend This Product

The Fox ESS ECS2900 Slave module is recommended for system expansion due to:

Providing a useful 2.88kWh capacity increase per module.
Utilising safe and proven LiFePO4 battery technology.
Its simple, stackable design for easy integration into existing systems.
Maintaining the high performance and reliability metrics of the Fox ECS series.

Technical Highlights (Per Slave Module)

Based on the ECS2900 series datasheet:

Module Type: Slave Expansion Module (CS2900)
Nominal Capacity (Module): 2.88 kWh
Cell Technology: LiFePO4
Compatibility: Requires ECM2900 Master and compatible Fox ESS Inverter

Note: Adding slave modules increases total system capacity, weight, and affects operating voltage range. Refer to the datasheet for detailed system specifications based on module count.

Expand Your Fox ESS 2900 System Today

Increase your energy storage capacity step-by-step with the Fox ESS ECS2900 Slave module. Verify your mounting setup can handle the added weight. Browse our range of Fox ESS inverters and other solar batteries to complete your renewable energy solution.

Attribute name	Attribute value
Dimensions	474 x 360 x 130 mm
Weight	29 kg
Warranty	10 Years
Protection Class	IP65 (Outdoor Use)
Battery Capacity	2.88 kWh
Battery Type	High Voltage
Nominal Voltage	102.4 V
Voltage Range	87.5 - 113.6 V
Scalability	Up to 7 modules in parallel

ECS2900

FOX ESS

Fox ESS is a global leader in the development of inverter and energy storage solutions. Engineered by some of the world’s leading inverter and battery experts, their products offer advanced features, coupled with exceptional performance and reliability.

Free delivery -

NEXT DAY Delivery to Oxfordshire, Buckinghamshire and London via an EVERGY vehicle. Max of 1 ton weight.

Other delivery options via courier -

FREE NEXT DAY (*orders over £50, some batteries and inverters will require an additional fee) via FEDEX. Monday to Friday, up to 30kg, Max box size 50cm x 50cm x 50cm (volume). Orders must be received by 2pm.

Anytime NEXT DAY delivery – under £50 = £6.50 (depending on location, weight and size)

Regardless of spend, additional to any of the above charges –

Before noon (FedEx Priority Express) = Guide Price £15.00 (calulated at checkout)

Before 10am (FedEx First) = Guide Price £20.00 (calulated at checkout)

Delivery of pallets -

Palletised deliveries – Prices starting at £58

Multiple pallet orders can be quoted upon request (price dependent on number of pallets and postcode area)

Special delivery items may vary (non-stock products).

SAME DAY COLLECTION - Click & collect from Evergy Stores (Thame, Oxfordshire).

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