# BYD HVM (Battery-Box Premium) high-voltage battery system, 16.6 kWh

> BYD Battery-Box Premium HVM is a premium modular high-voltage (HV) energy storage system designed for residential and commercial applications. The system utilizes highly safe, cobalt-free lithium iron phosphate (LiFePO₄) technology and features a patented wireless plug-in design, allowing easy capacity expansion from 8.3 kWh to 22.1 kWh (and up to 66.2 kWh when connected in parallel).

## Product identity
- **Brand:** BYD
- **Product family:** BYD HVM (Battery-Box Premium) aukštos įtampos baterijų sistema
- **Variant:** 16.6 kWh
- **SKU:** YSO754

## Description
The HVM system is designed with easy installation and expansion in mind. A single tower consists of a main control unit (BCU) and 6 battery modules. The [**Battery-Box Premium HVM**](https://solaroutlet.lt/byd-hvm-battery-box-premium-baterijos-modulis-276-kwh) series uses pure cobalt-free lithium iron phosphate (**LiFePO₄**) cells, meeting the strictest industry safety standards (including VDE 2510-50). This technology ensures high thermal stability, fire resistance, and a long service life – the battery withstands more than 6,000 charge/discharge cycles and comes with a 10-year manufacturer's warranty.

**High-voltage (HV) efficiency and wide compatibility** High operating voltage (ranging from 150 V to 480 V depending on the number of modules) ensures the lowest possible energy losses during conversion and enables high instantaneous power output. The system is compatible with many of the leading three-phase hybrid inverters on the market (*Solis, Fronius, SMA, Sungrow, GoodWe, Kostal*, etc.).

**Backup power and smart management** Combined with a compatible hybrid inverter, the BYD HVM system ensures lightning-fast switching to backup power (UPS function) in the event of a grid outage. The battery is easy to configure and monitor remotely via the **"Be Connect 2.0"** mobile app, and the IP55 protection class allows safe installation both indoors and in appropriately protected outdoor spaces.

## Specifications
- **Voltage type:** Aukšta įtampa (HV)
- **Protection Class (IP):** IP55
- **Warranty:** 10 m.
- **Battery type:** LiFePO4
- **Nominal voltage:** 256 V
- **Operating temperature:** nuo -10 °C iki +50 °C

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