The Fox ESS EQ Battery Range is a modular, high-voltage battery range for residential energy storage systems. The range includes EQ2900, EQ4300, EQ4800 and EQ5000 models, giving installers a choice of stackable battery options for different system requirements.
Each EQ system uses a floor-mounted, modular design. Additional battery modules can be installed in series, with capacity varying by model and the number of modules used.
For larger storage requirements, the CQ7 offers a higher-capacity modular option within the Fox ESS battery range. Each CQ7 module provides 7.02kWh of storage and can scale up to 98.28kWh per input, with battery sizing depending on the compatible inverter and system configuration.
The EQ Battery Range can be paired with compatible Fox ESS hybrid inverters. Battery configuration and capacity depend on the inverter model, battery model and number of modules used.
EQ2900
Min. Stack: 2 (5.76kWh)
Max. Stack: 7 (20.16kWh)
EQ4300
Min. Stack: 2 (8.28kWh)
Max. Stack: 7 (28.98kWh)
EQ4800
Min. Stack: 3 (13.98kWh)
Max. Stack: 9 (41.94kWh)
EQ5000
Min. Stack: 2 (9.84kWh)
Max. Stack: 6 (29.52kWh)
Each stack will consist of 1 x master (EQM) and additional slave (EQS) battery modules.
*The H3 Pro boasts two battery inputs allowing for the connection of two battery stacks.
*Battery warm-up availability varies by model and system configuration. Not available on EQ4800. Available on EQ2900, EQ4300 and EQ5000 only when the system includes both EQ master and slave units (EQ slave batteries can be paired with legacy ECS versions – check compatibility) but warming will be disabled).
Fox Cloud is your online command centre — giving you full visibility and control over your energy system from anywhere. With a clean, intuitive interface, it allows you to monitor real-time performance, review historical data, and adjust settings to suit your lifestyle or energy tariff.
Whether you’re fine-tuning your charge/discharge schedule, checking your battery health, or tracking solar generation, Fox Cloud makes managing your system simple and smart. It’s available via web browser and syncs seamlessly with the Fox ESS app, so you’re always connected – whether at home or on the go.
Feature availability may vary depending on your device and app version.
Smart optimisation - forecasting solar, tracking tariffs, and automatically charging or discharging to cut costs, while also enabling participation in grid flexibility services.
Join a Virtual Power Plant that aggregates Fox systems to support the grid and unlock extra value through flexible energy services.
Kraken’s smart tariffs and automation intelligently control Fox batteries to maximise low-cost, low-carbon energy use.
A secure energy connectivity platform that links Fox systems with leading clean-tech apps for seamless optimisation and demand-response control.
Copyright © 2025 FoxESS UK Ltd. All Rights Reserved.
