Fox ESS EQ4800 4.66kWh High-Voltage Battery Module (Slave)
The Fox ESS EQ4800 (part number FE-HV-EQS-4800) is a 4.66 kWh high-voltage lithium iron phosphate (LiFePO₄) battery module designed as a slave unit within the Fox ESS EQ storage platform. With a nominal voltage of 153.6 V per module, 90% depth of discharge, and round-trip efficiency greater than 95%, the EQ4800 delivers scalable energy storage for residential and light commercial installations. Up to 9 modules can be installed in a single stack (1 x Master + 8 x Slaves) for a maximum capacity of 41.94 kWh. The EQ4800 is backward compatible with the predecessor ECM/S-4800 battery range. CAN/RS485 communication, IP65 rated. This is a slave module and must be installed with a compatible master. Available from DECO Group, a UK-based solar wholesaler for professional trade installers.
Key Technical Details
- Part number: FE-HV-EQS-4800
- Supplier part number: FE-HV-EQS-4800
- Model: EQ4800 (Slave)
- Battery chemistry: LiFePO₄ (LFP)
- Nominal energy: 4,660 Wh (4.66 kWh)
- Nominal voltage: 153.6 V per module
- Depth of discharge: 90%
- Round-trip efficiency: greater than 95%
- Continuous discharge rate: 2,225 W
- Maximum discharge rate (5 minutes): 4,450 W
- Surge discharge rate (15 seconds): 3,000 W
- Maximum charge rate (5 minutes): 4,450 W
- Communication: CAN / RS485
- Ingress protection: IP65
- Maximum modules per stack: 9 (1 x Master + 8 x Slaves)
- Maximum stack capacity: 41.94 kWh
- Weight: 41.5 kg
Key Features
- 4.66 kWh capacity per module with LiFePO₄ chemistry and 90% usable depth of discharge
- Scalable from a minimum 2-module stack (9.32 kWh) up to 9 modules (41.94 kWh)
- Round-trip efficiency greater than 95%
- High-voltage architecture at 153.6 V per module for reduced losses
- Backward compatible with the predecessor ECM/S-4800 battery systems
- CAN/RS485 communication for system integration
- Plug-and-play installation for fast on-site build-out
- IP65 rated for indoor or outdoor stand-mounted installation
- Wide temperature tolerance
- 12-year warranty upon registration with Fox ESS
System Compatibility
- Compatible with Fox ESS high-voltage hybrid inverters and AC charger inverters
- This is a slave module and must be installed with a compatible EQ4800 master to form a working stack
- Minimum configuration: 1 x Master + 1 x Slave (2 modules)
- Maximum configuration: 1 x Master + 8 x Slaves (9 modules, 41.94 kWh)
- Backward compatible with the predecessor ECM/S-4800 battery range
Installation Notes
- At 41.5 kg per module, a two-person lift is required
- Stand-mounted stackable installation, IP65 rated for indoor or outdoor siting
- Additional modules must be compatible with the existing battery stack
- Must be installed by a qualified electrician or technician in compliance with local wiring regulations
Warranty
- Standard warranty: 5 years
- Extended warranty: 12 years when the installation is registered with Fox ESS online
Common Questions
Click a question below to reveal the answer.
Can the Fox ESS EQ4800 Slave operate on its own?
No. This is a slave module and must be installed with a compatible EQ4800 master module. The minimum system configuration is 1 x Master + 1 x Slave.
How many Fox ESS EQ4800 modules can be installed in one stack?
A maximum of 9 modules per stack (1 x Master + 8 x Slaves), giving a total capacity of 41.94 kWh.
Is the Fox ESS EQ4800 compatible with the older ECM/S-4800 batteries?
Yes. The EQ4800 is backward compatible with the predecessor ECM/S-4800 battery range.
What is the battery chemistry of the Fox ESS EQ4800?
The EQ4800 uses lithium iron phosphate (LiFePO₄) chemistry with a 90% depth of discharge and round-trip efficiency greater than 95%.
Can the Fox ESS EQ4800 be installed outdoors?
Yes. The EQ4800 is IP65 rated and can be installed indoors or outdoors when correctly stand-mounted.
DECO Group supplies Fox ESS EQ4800 master and slave battery modules alongside compatible hybrid inverters, AC charger inverters, and system accessories. Browse our Fox ESS battery storage catalogue for complete scalable energy storage configurations.
About DECO Group
We are a UK solar and energy storage wholesaler supplying high-voltage battery modules, hybrid inverters, and balance-of-system components to professional installers and electrical contractors. Our Fox ESS EQ battery range covers all capacity variants from 2.88 kWh to 4.66 kWh per module. Visit decogroup.co.uk for the full catalogue.
