BYD Battery-Box Premium HVS 7.7 kWh
Payment and delivery
Payment and delivery
Payment
You can pay for your order by bank transfer, in HUF or EUR. Cash on delivery is available for orders up to HUF 500,000 with a handling fee of HUF 4,990. For orders over HUF 500,000, only bank transfer is possible. We will send you a proforma invoice by email, which will include the details required for the transfer.
Delivery
We deliver your orders throughout Hungary with the help of our reliable logistics partners or our own transport. Personal collection is possible by prior arrangement. The shipping cost is determined based on the size, weight and type of the ordered product:
- Small package: HUF 3,790
- Large package: HUF 6,490
- Heat pump: free delivery
- Solar panel and battery: individual shipping fee (based on size, weight and quantity)
Product description
Product description
The BYD Battery-Box Premium HVS is a high-voltage, modular energy storage system designed for residential and small commercial solar systems. The system uses BYD's proprietary, cobalt-free lithium iron phosphate (LFP) cells, which provide outstanding safety and a long cycle life.
Available versions:
- BYD Battery-Box Premium HVS 5.1 – 5.12 kWh
- BYD Battery-Box Premium HVS 7.7 – 7.68 kWh
- BYD Battery-Box Premium HVS 10.2 – 10.24 kWh
- BYD Battery-Box Premium HVS 12.8 – 12.80 kWh
Each HVS system is built from 2 to 5 modules connected in series to create the high-voltage architecture. The modules connect to each other with an internal connector, cable-free plug-in system, which simplifies installation and minimizes potential errors. The entire system can be expanded up to 38.4 kWh by connecting three identical units in parallel.
One of the main advantages of the HVS series is the true high-voltage (HV) series connection, which results in high energy transfer efficiency (≥96%). The integrated BMS continuously monitors the status of all cells – tracking voltage, temperature, current – and performs automatic cell equalization.
BYD's patented modular design allows for later expansion without the need to replace the entire system. The IP55-rated enclosure is suitable for both indoor and outdoor installation, and the operating range of –10 °C to +50 °C guarantees stable performance.
- Available capacities: 5.1 / 7.7 / 10.2 / 12.8 kWh
- High-voltage (HV) architecture, buildable from 2–5 modules
- Cable-free plug-in connection, fast installation
- LFP cells – cobalt-free, safe, long lifespan
- Expandable up to 38.4 kWh (by connecting 3 units in parallel)
- ≥96% efficiency due to series system connection
- BMS with cell-level monitoring and automatic equalization
- IP55 protection, for indoor and outdoor installation
- Compatible with leading inverter manufacturers (e.g., Fronius, GoodWe, SMA, Sungrow)
- 6000+ charge cycles, 10-year warranty
- Certifications: VDE 2510-50, IEC62619, CE, UN38.3
The BYD Battery-Box Premium HVS series is a reliable, high-voltage solution that offers high efficiency, modular expandability, and exceptional safety. It is an ideal choice for increasing self-consumption, as well as for off-grid or backup power applications.
| Névleges kapacitás (kWh) | 7.68 kWh |
|---|---|
| Hasznosítható energia | 7.68 kWh |
| Csúcsteljesítmény | 7.68 |
| Max. töltőáram | 25 A |
| Max. kisütési áram | 25 A |
| Névleges feszültség | 307.2 V |
| Működési feszültségtartomány | 240–360 V |
| IP védelem | IP55 |
| Működési hőmérséklet | -10 °C ~ +50 °C |
| Méret | 995×585×298 mm |
| Tömeg | 129 kg |
| Garancia | 10 years |
Do you have a question?
View frequently asked questions or contact us.
How do I choose the right battery?
How do I choose the right battery?
First, always check if the battery is compatible with your inverter, as not all systems work with all manufacturers. This information is usually found in the inverter's technical data sheet.
Next, you should consider what storage capacity you need (kWh). This depends on how much energy you want to store and which appliances you wish to operate in case of a power outage. If you are considering future expansion, it is advisable to choose a modularly expandable system.
An important distinction is that some systems operate in a closed ecosystem (e.g., only compatible with batteries from their own manufacturer), while other inverters can be connected to products from multiple manufacturers, thus providing greater flexibility.
If you are unsure about your choice, it is worth seeking expert advice – this can help avoid compatibility issues and unnecessary costs.
How do inverter types differ?
How do inverter types differ?
Inverters differ in several aspects, depending on the system and requirements for which they are used.
1. Grid-tied (on-grid) inverter
This is the most common type. It feeds the generated energy directly back into the grid and does not operate during a power outage.
2. Hybrid inverter
It is also capable of managing batteries, so the generated energy can be stored. In the event of a power outage, certain systems can also provide backup power.
3. Off-grid inverter
Completely independent of the grid. Used in places where there is no electrical grid (e.g., holiday homes, farmsteads).
4. By phase: single-phase and three-phase
Single-phase: for smaller systems (family homes, lower consumption)
Three-phase: for larger systems, with balanced load distribution
5. String inverter vs. optimized system
String inverter: several panels connected in series
Optimized system: individual optimizers per panel, better performance in case of shading
What happens in a power outage?
What happens in a power outage?
In the event of a power outage, the system's operation depends on the inverter type.
If the inverter has a backup (off-grid) function, it automatically switches to battery mode during a power outage, allowing selected consumers (e.g., lighting, refrigerator, essential appliances) to continue operating.
If the inverter does not support this function, the system will shut down in the event of a power outage. This means there will be no power supply even if the solar panels are generating electricity, as grid-tied inverters do not operate without grid voltage for safety reasons.
Therefore, if continuous power supply is important, it is advisable to choose an inverter-battery system that supports backup operation.
What is the warranty on the batteries?
What is the warranty on the batteries?
Battery warranties vary by manufacturer and type.
In most cases, a 5–10 year manufacturer's warranty is provided, which for some models may also be tied to a specific number of charging cycles or performance.
The exact warranty conditions are specified for each product, so before purchasing, you can clearly see the duration and conditions under which the warranty is valid.
If you have any questions regarding the warranty, we will help you navigate the details to ensure you choose the system that best suits your needs.
What happens if the battery fails?
What happens if the battery fails?
As a first step, it's worth checking if the problem is indeed with the device itself, as in many cases, the issue lies with settings, communication, or system connection, rather than the battery.
If the fault is verifiably linked to the product, investigation and resolution will be carried out within the framework of warranty administration, involving the manufacturer or distributor.
If needed, we can assist in initiating and guiding this process to ensure troubleshooting is as quick and smooth as possible.
Professional Articles and Guides
Deye Inverter Buying Guide – Types and Advantages
We help you navigate the world of Deye inverters: types, advantages, and practical advice all in one place.
Read more
Introducing the Huawei SUN2000-(5K–12K)-MAP0 Inverter Family
Learn about Huawei's hybrid inverter family: performance, smart features, battery management, and practical information.
Read more
15 most common solar panel system mistakes to avoid
Professional and practical tips for error-free solar panel installation. We help you avoid maintenance and design problems.
Read more