
Fox ECS 4.14kWh HV Battery (Slave)
£947.85
Exc. VAT
Tracked Delivery
Order before 2pm for next-day delivery
Lithium Ion
Battery Type
4145 Wh
Nominal Energy
90.00 %
Depth of Discharge
57 V
Battery Voltage
2875 W
Cont. Discharge
2875 W
Max Discharge (5m)
3737 W
Surge Discharge (15s)
2875 W
Max Charge (5m)
14-Day Returns
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Why Choose ClearRay Solar?
- UK stock — no drop-ship delays
- MCS-certified products
- Industry-lowest trade rates
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- Fox ECS 4.14kWh HV Battery (Slave)
- Part No: FE-HV-ECS-4300
- Storage Systems - Li-ion Battery Pack
- 4.14kWh Capacity
- Scalable to 29.03kWh
- 90% Depth of Discharge
- Wide Temperature Tolerence
- Easy Installation
- CAN/RS485 Communication
- High Voltage
Fox ECS - High Voltage Battery (Slave)
ECS4300
ECS is a high-performance, scalable battery storage system. The modular design allows for maximum flexibility, making it suitable for a broad range of storage applications. Additional batteries can be installed in series, allowing for a maximum storage capacity of 29.03 kWh. Installation is easy, with a plug and play solution that can save valuable time for installers.
Don't forget: You must register your install with Fox online to activate the 12 year product warranty, otherwise it's 5 years as standard. Please click here for registration page. Please check the warranty document for more information.
This battery requires a MINIMUM of 2 modules to work (Master + Slave), This battery can have a MAXIMUM of 7 modules in a stack (1x Master + 6x Slaves)
If you are adding battery modules to a pre-existing Energy Cube stack, it’s important that the new batteries are compatible with your original battery modules. Please contact your Technical person via the portal and provide a photograph of the original battery stack to help us determine correct compatibility
This product must be installed by a qualified electrician/technician. All installations must adhere to local wiring regulations and standards. SegenSolar will not be held liable for any product malfunctions as a result of incorrectly installed systems.
Product Documents & Certificates
CE Declaration of Conformity (Attestation of Conformity) ECS 2.9/4.1/4.3
CE Declaration of Conformity HV & ECS Batteries - EN
Data Sheet FOX ECS 4300 DE (Dutch)
Data Sheet FOX ECS 4300H V1.3 EN
Safety Transport & Handling Documentation Fox ESS ECS4300 EN
Safety Transport & Handling Documentation Fox ESS ECS4300 EN
User Manual Fox ESS ECS Batteries
Warranty Fox ESS Battery V4.5
White Paper FOX ESS Cyber Security
White Paper Why Fox?
Delivery times vary by region:
- UK — 1-2 business days
- Highlands & Islands — 1-2 business days
Returns accepted within 14 days of delivery for unused items in original packaging.

