Fox ESS EQ4800-L4 18.64kWh High-Voltage Battery Stack (1 x Master + 3 x Slave)
The Fox ESS EQ4800-L4 (package part number FE-HV-EQ-4-4.8-19.2) is a 4-module high-voltage LiFePO₄ battery stack comprising 1 x EQ4800 Master (FE-HV-EQM-4800) and 3 x EQ4800 Slave (FE-HV-EQS-4800), delivering 18.64 kWh of nominal storage at 90% depth of discharge with a stack voltage of 179 V. The stack can be expanded with up to 5 additional Slave modules to reach the maximum of 9 modules (41.94 kWh). Backward compatible with the predecessor ECM/S-4800 battery range. Compatible with Fox ESS hybrid inverters and AC charger inverters. Available from DECO Group, a UK-based solar wholesaler for professional trade installers.
Package Contents
- 1 x Fox ESS EQ4800 4.66 kWh HV Battery Master (FE-HV-EQM-4800)
- 3 x Fox ESS EQ4800 4.66 kWh HV Battery Slave (FE-HV-EQS-4800)
Stack Specifications (4-Module Configuration)
- Battery chemistry: LiFePO₄ (LFP)
- Total nominal capacity: 18,640 Wh (18.64 kWh)
- Nominal stack voltage: 179 V
- Depth of discharge: 90%
- Continuous discharge rate: 2,240 W
- Maximum discharge rate (5 minutes): 4,480 W
- Surge discharge rate (15 seconds): 5,785 W
- Maximum charge rate (5 minutes): 4,480 W
- Communication: CAN / RS485
- Dimensions (4-module stack): 570 x 622 x 380 mm (W x H x D)
- Net weight: 169 kg
Key Features
- 18.64 kWh total capacity from 4 x LiFePO₄ modules with 90% usable depth of discharge
- Pre-configured stack with master module included for immediate installation
- Expandable: up to 5 additional Slave modules can be added post-installation to reach 41.94 kWh (9 modules)
- Backward compatible with the predecessor ECM/S-4800 battery range
- CAN/RS485 communication for system integration
- Plug-and-play stackable design
- 12-year warranty upon registration with Fox ESS
System Compatibility
- Compatible with Fox ESS H1, H1-G2, KH, H3 Smart, H3, and H3 Pro hybrid inverters and AC charger inverters
- Maximum configuration: 9 modules per stack (1 x Master + 8 x Slaves, 41.94 kWh). Consult the Fox ESS Battery Sizing Guide.
- Backward compatible with ECM/S-4800 battery systems
Installation Notes
- Total net weight: 169 kg. Individual modules weigh 41.5 kg (Slave) and 44.5 kg (Master); two-person lift required per module
- Stack dimensions: 570 x 622 x 380 mm (W x H x D)
- 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 I add more modules to this battery stack?
Yes. Up to 5 additional EQ4800 Slave modules can be added post-installation, expanding the stack to a maximum of 9 modules (41.94 kWh).
Is a master module included in this package?
Yes. This package includes 1 x EQ4800 Master and 3 x EQ4800 Slave modules, ready for immediate installation.
What inverters are compatible with this battery stack?
This stack is compatible with Fox ESS H1, H1-G2, KH, H3 Smart, H3, and H3 Pro hybrid inverters and AC charger inverters.
What is the total weight of this battery stack?
The 4-module stack weighs 169 kg net (Master 44.5 kg + 3 x Slave at 41.5 kg each). Two-person lift required per module.
DECO Group supplies Fox ESS EQ4800 battery stacks in configurations from 2 to 9 modules alongside compatible hybrid inverters, AC charger inverters, and system accessories. Browse our Fox ESS battery storage catalogue for pre-configured stacks at every capacity point.
About DECO Group
We supply Fox ESS high-voltage battery stacks and hybrid inverters to professional installers and electrical contractors across the UK. Our EQ4800 range is available in pre-configured stacks from 9.32 kWh to 41.94 kWh for flexible system specification. Visit decogroup.co.uk for the full catalogue.
