Fox ESS EQ4800-L3 13.98kWh High-Voltage Battery Stack (1 x Master + 2 x Slave)
The Fox ESS EQ4800-L3 (package part number FE-HV-EQ-3-4.8-14.4) is a 3-module high-voltage LiFePO₄ battery stack comprising 1 x EQ4800 Master (FE-HV-EQM-4800) and 2 x EQ4800 Slave (FE-HV-EQS-4800), delivering 13.98 kWh of nominal storage at 90% depth of discharge with a stack voltage of 134 V. The stack can be expanded with up to 6 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)
- 2 x Fox ESS EQ4800 4.66 kWh HV Battery Slave (FE-HV-EQS-4800)
Stack Specifications (3-Module Configuration)
- Battery chemistry: LiFePO₄ (LFP)
- Total nominal capacity: 13,980 Wh (13.98 kWh)
- Nominal stack voltage: 134 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 (3-module stack): 570 x 524 x 380 mm (W x H x D)
- Net weight: 127.5 kg
Key Features
- 13.98 kWh total capacity from 3 x LiFePO₄ modules with 90% usable depth of discharge
- Pre-configured stack with master module included for immediate installation
- Expandable: up to 6 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: 127.5 kg. Individual modules weigh 41.5 kg (Slave) and 44.5 kg (Master); two-person lift required per module
- Stack dimensions: 570 x 524 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 6 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 2 x EQ4800 Slave modules, ready for immediate installation.
Is the EQ4800 compatible with older ECM/S-4800 batteries?
Yes. The EQ4800 range is backward compatible with the predecessor ECM/S-4800 battery systems.
What is the total weight of this battery stack?
The 3-module stack weighs 127.5 kg net (Master 44.5 kg + 2 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 and individual modules.
About DECO Group
We are a UK solar and energy storage wholesaler supplying pre-configured high-voltage battery stacks, hybrid inverters, and installation accessories to professional installers and electrical contractors. Our Fox ESS EQ4800 range is available in multiple stack sizes for flexible system specification. Visit decogroup.co.uk for the full catalogue.
