HV BYD Battery-Box Premium HVS+ 5.1kWh lithium battery

HV BYD Battery-Box Premium HVS+ 5.1kWh lithium battery

BYD, a global leader in battery manufacturing and energy storage solutions, presents the new generation of its high-voltage batteries: the BYD Battery-Box Premium HVS+ 5.1 kWh, part of the HVS+ series, a direct evolution of the renowned HVS.

These new batteries offer higher energy density, optimised power, a more compact design and extended compatibility with the leading hybrid inverters on the market, consolidating BYD as a benchmark in storage for residential and industrial self-consumption.

Thanks to its modular and scalable architecture, the Battery-Box Premium HVS+ 5.1 kWh allows you to start with a small configuration and easily expand it as your energy needs grow. Its plug-and-play design reduces installation time, eliminates internal wiring and ensures a safe and clean connection.

Why is the BYD Battery-Box Premium HVS+ 5.1 kWh one of the best options on the market?

The BYD Battery-Box Premium HVS+ 5.1kWh lithium battery consists of 1 unit. BCU+Base for HV Lithium Battery BYD Battery Box Premium HVS+ / HVM+ - 16541149-00 and 2 2.56 kWh HVS+ modules each, reaching a total usable capacity of 5.12 kWh.
Each battery tower can be expanded to up to 5 modules (12.8 kWh) or combined in parallel with other towers, achieving greater storage capacities.

The BMS (Battery Management System) integrated in the BCU manages energy in real time, balancing cells, monitoring temperature and protecting the system against any incident. The whole system is designed to deliver performance, reliability and maximum safety for more than 6,000 charge cycles.

Main functions of the BYD Battery-Box Premium HVS+ 5.1 kWh

Intelligent management and control

The BMS system continuously monitors the voltage, current and temperature of each cell, ensuring efficient and stable operation. It also optimises the use of stored energy to extend the life of the system.

Safety and security

The battery incorporates advanced protections against overcharging, over-discharging, short circuits and extreme temperatures.
Complies with international certifications IEC 62619, UN 38.3 and CE, guaranteeing electrical, mechanical and transport safety.

Advanced communication

The Battery-Box Premium HVS+ 5.1 kWh has integrated CAN and RS485 interfaces, enabling seamless communication with the leading inverters on the market (Fronius, GoodWe, SMA, Kostal, Victron, Huawei, among others).
This bi-directional communication enables intelligent management of the energy flow between the PV array, the battery and the household consumption.

Ease of installation

The system is assembled by stacking vertically without the need for internal wiring.
The power and communication connectors are integrated, facilitating quick, secure, and error-free installation.

Robust and modular structure

The reinforced metal casing and modular design provide a solid foundation, precise module alignment and optimal heat dissipation.
This ensures stable performance even in demanding environments.

Compatibility between BYD battery systems

The Battery-Box Premium HVS+ is part of BYD's new generation of high-voltage batteries and is only compatible with components from the HVS+ series and the new generation BCU+Base unit.

Battery-Box Premium HVS+: Stackable from 2 to 5 modules (5.1 - 12.8 usable kWh).

HVS+ modules are not backward compatible (HVS), so they cannot be combined with modules or BCUs from previous versions. They cannot be mixed in the same tower or put new towers in parallel with module towers of previous versions.

Compatibility with inverters

BYD Battery-Box Premium HVS+ lithium batteries are compatible with a wide range of market-leading inverters such as Fronius, GoodWe, SMA, Kostal, Victron, Huawei or Solis.
This compatibility ensures easy integration into self-consumption systems with storage, hybrid installations or backup configurations.

Updated list of inverters compatible with BYD Battery Box Premium HVS+ / HVM+ batteries Version V1.3, updated 17/10/25

HVS+ batteries

Advantages of the new design of the BYD Battery-Box Premium HVS+ 5.1 kWh

More power and flexibility

The HVS+ 5.1 kWh model offers superior power and energy density compared to previous series. It is ideal for residential photovoltaic systems that require night-time autonomy or stable energy backup.

Seamless integration with state-of-the-art inverters

Fully compatible with Fronius GEN24 Plus, GoodWe ET Plus+, SMA Sunny Boy Storage, Kostal Plenticore Plus and Victron Multiplus II, among others.

Modular and expandable installation

It allows you to start with two modules (5.1 kWh) and expand up to 12.8 kWh simply by stacking new modules on top of the same base, without having to change the initial unit.

Minimal maintenance

No fans or moving parts. Passive cooling and IP55 sealing ensure long life without periodic maintenance.

Robust and safe design

Reinforced metal structure with full insulation against accidental contact.
Suitable for indoor installation (garages, technical rooms, attics, etc.).

How to size a battery?

The first step is to define the purpose for which you want the battery. Are you looking to save energy and store it during the day for use at night? Do you need a backup system for emergencies such as power outages or prolonged blackouts? Do you want to gain autonomy and greater independence from the utility companies?

Once you are clear about your target, all you have to do is calculate the consumption you would make during the hours of battery use. This calculation is very easy if you are expanding your panel installation because you will be able to access your actual data through your inverter's app, such as the Fronius Solar.web. If you do not have this data, you can always consult your supplier. As a general rule, around 40% of the daily consumption is made when there is no sun.

You should also take into account the power that the battery and inverter combination can deliver, which should be able to cover your peak consumption.

With this information, you can now choose the battery that best suits your needs.

Example of installation of a BYD Battery-Box Premium HVS+ 5.1 kWh

A typical installation includes:

1 × BCU+Base - 16541149-00
2 × HVS+ modules (2.56 kWh each)

This configuration provides 5.12 kWh of usable energy, enough to cover the consumption of a single-family home with an average consumption of up to 5kWh during the night. How long the battery lasts depends on consumption and its charge level. The higher the charge percentage when using the battery and the lower the consumption, the longer it will last.

Recommended installation of a high-voltage lithium battery

• Location: In a dry indoor location, on a level and stable surface, away from heat or humidity.
• Assembly: The base is installed and the HVS+ modules are stacked vertically on top of it using a direct connection without internal cables. They are connected using the integrated connectors.
• Electrical connection: Power and communication cables are connected directly from the BCU to the inverter, with no additional wiring between modules.
• Commissioning: This is done from the compatible inverter interface, which automatically detects the battery and configures the system according to the parameters of the BMS (Battery Management System).

What is the warranty on the BYD Battery Box Premium HVS+ lithium batteries?

BYD offers a 10-year warranty for the entire Battery-Box Premium HVS+ range, covering both the BCU unit and the battery modules, provided that the system is installed according to the manufacturer's specifications and with approved inverters.

Technical specifications of the BYD Battery-Box Premium HVS+ 5.1kWh HV lithium battery

Technical specifications BYD Battery-Box Premium HVS+ 5.1kWh HV lithium battery

Technical specifications of the BYD Battery-Box Premium HVS+ 5.1kWh HV lithium battery

Installation manual for BYD Battery-Box Premium HVS+ 5.1kWh HV lithium battery

Installation manual for the BYD Battery-Box Premium HVS+ 5.1kWh lithium battery