FOXESS DQ6.6 High-Voltage Battery: Highly efficient storage power and maximum scalability for professional energy projects
The FOXESS DQ6.6 high-voltage battery storage system sets new standards for demanding commercial and residential installations that prioritize reliable and yield-optimized energy independence. With an outstanding storage capacity of 6.62 kWh per module and a high depth of discharge of 95%, your solar power self-consumption is noticeably maximized. Thanks to the smart modular design featuring master (DQ6.6-M) and slave units (DQ6.6-S), the system can be seamlessly expanded from 19.86 kWh to a massive 92.68 kWh of storage capacity using simple plug-and-play installation.
Highlights of the DQ6.6-M (Master Module)
- Intelligent system control: As the central master unit, it handles the precise monitoring and control of up to 14 series-connected battery modules.
- Reliable CAN communication: Ensures uninterrupted and fast data exchange with the inverter and all connected units.
- Detailed LED display: Equipped with 6 status LEDs for quick and transparent visual diagnosis of the system and charge status.
- Integrated fire protection: Integrated safety and fire protection functions ensure the highest level of system safety.
Highlights of the DQ6.6-S (Slave Module)
- High-performance 6.62 kWh expansion: Allows flexible adjustment of storage capacity within the system from 19.86 kWh (3 modules) up to 92.68 kWh (14 modules).
- Secure LFP cell technology: High-quality lithium iron phosphate cells (LiFePO4) stand for excellent thermal stability, long service life, and efficiencies of over 95%.
- High current carrying capacity: Supports a peak discharge current of up to 110 A (for 60 seconds) as well as a maximum charge/discharge current of 80 A.
- Weatherproof IP65 housing: Robust floor-standing housing for flexible indoor and outdoor use in temperatures ranging from -10 °C to +55 °C (optionally down to -25 °C thanks to pre-heating).
Technical specifications of the DQ6.6-M master module
Technical specifications of the DQ6.6-S slave module
Advantage for professionals: The FOXESS DQ6.6 high-voltage system impresses with fast plug-and-play installation, outstanding efficiencies of over 95%, and exceptional power density. With its enormous scalability from 19.86 kWh up to 92.68 kWh, you offer your customers a future-proof, extremely robust storage solution for demanding commercial and large-scale projects.
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Frequently Asked Questions
What are the advantages of using a photovoltaic system from Terra Energy?
What are the advantages of using a photovoltaic system from Terra Energy?
With a PV solution, companies can reduce their energy costs, cut CO₂ emissions, and strengthen their corporate sustainability. Our partner solutions ensure performance, efficiency, and future-proofing in B2B applications.
What happens after I purchase a system? Is there support or maintenance?
What happens after I purchase a system? Is there support or maintenance?
Our service doesn't end with your purchase. We support you from delivery and commissioning to the long-term optimization of your system. Our technical support team is available to answer questions and can arrange specialized installation or maintenance partners if needed.
What shipping and delivery options do you offer?
What shipping and delivery options do you offer?
Within Germany, we generally offer free shipping for photovoltaic systems. For international deliveries or bulky components such as modules or mounting systems, we will individually prepare a shipping solution for you (e.g., pallet delivery, truck freight).
What payment methods are available to business customers?
What payment methods are available to business customers?
We offer various payment options for business customers, including prepayment and purchase on account. Simply contact our sales department.
How does Terra Energy support me in selecting and planning my PV solution?
How does Terra Energy support me in selecting and planning my PV solution?
We offer expert advice and customized planning, taking into account location, consumption, subsidies, and technology. Together, we will develop your optimal solution, from the initial concept to commissioning.
What brands and technologies do you carry?
What brands and technologies do you carry?
We work with leading manufacturers and brands in the photovoltaic and energy storage segments to offer you state-of-the-art technology with high quality and performance. Please feel free to ask us for specific manufacturer and product details for your project.
