BYD Battery-Box Premium HVS 7.7 solar storage

BYD Battery-Box Premium HVS 7.7 – High-voltage storage with 7.7 kWh capacity

The BYD Battery-Box Premium HVS 7.7 is a modular high-voltage storage system for the efficient storage of solar power. With three HVS modules, each with a capacity of 2.56 kWh, it offers a total usable capacity of 7.68 kWh. The storage system is ideally suited for homes with medium electricity consumption, for optimizing self-consumption, for emergency power systems, or off-grid applications. The cobalt-free lithium iron phosphate (LiFePO₄) technology ensures maximum safety and a long service life.

Technical specifications

• Usable capacity: 7.68 kWh
• Number of modules: 3 × HVS (2.56 kWh each)
• Nominal voltage: 307.2 V (voltage range: 240–354 V)
• Max. output current: 25 A (briefly 50 A for 5 seconds)
• Dimensions (H × W × D): 995 × 585 × 298 mm
• Weight: approx. 129 kg
• Cell technology: Lithium iron phosphate (LiFePO₄), cobalt-free
• Protection rating: IP55 – for indoor and protected outdoor use
• Communication: CAN / RS485
• Certifications: VDE 2510-50, IEC 62619, CE, UN 38.3
• Warranty: 10 years

Advantages at a glance

• Modular storage solution: Flexibly expandable to up to 5 modules (max. 12.8 kWh per tower), up to 3 towers in parallel (max. 38.4 kWh)
• Safe and durable: Robust LiFePO₄ cells without cobalt – over 6,000 charge cycles at 90% depth of discharge
• Space-saving and easy to install: Plug-in system without internal wiring, quick installation
• Compatible with many inverters: Supports leading single- and three-phase hybrid inverters
• For self-consumption & backup: Perfectly suited for optimizing self-consumption, emergency power supply or for off-grid PV systems.

Typical areas of application

• Single-family homes with medium energy requirements
• Self-consumption optimization in conjunction with photovoltaic systems
• Power supply during grid failure in combination with hybrid inverter
• Energy storage for island systems or remote locations
• Retrofit solution for existing PV systems

The BYD Battery-Box Premium HVS 7.7 is an efficient, safe, and flexible solution for modern energy storage concepts. It combines intelligent technology with a practical design – ideal for anyone who wants to make optimal use of their solar power and take control of their energy supply.

This product is a storage system for photovoltaic systems and is therefore exempt from VAT according to §12 Paragraph 3 of the German VAT Act (UStG) since January 1, 2023. The VAT exemption is correctly displayed in the shopping cart and on the invoice. This VAT exemption applies only to private customers with their primary residence in Germany.

If you are a private customer from Germany and are using the item as storage for a solar power system, then select the option "Reduced VAT rate 0%"