BYD has introduced a new residential energy ecosystem for the European market and unveiled its latest home and commercial energy storage product, the Battery-Box Mega, at Smarter E Europe 2026 in Munich, Germany.
The launch marks the latest expansion of BYD Energy Storage’s product portfolio as the company seeks to strengthen its position in the global battery energy storage market.
Integrated Residential Energy Platform
The newly launched residential energy ecosystem combines three products designed to manage household electricity generation, storage and consumption.
The Smart Ecobox serves as the intelligent energy management platform, enabling automated scheduling and optimisation of household energy use.
The Backup-Box provides emergency electricity during grid outages, while the AC Charging Box integrates battery storage with home electric vehicle charging.
BYD said the new platform expands the traditional “solar plus storage” concept into a complete residential energy ecosystem that integrates power generation, storage, energy management, backup power and EV charging.
Battery-Box Mega Targets Homes and Businesses
The Battery-Box Mega was the centrepiece of BYD’s exhibition.
Although marketed as a residential storage solution, the product is also designed for small commercial applications including factories, farms, retail stores and hotels.
The system offers storage capacities ranging from 62.4kWh to 5.24MWh, combining commercial-grade performance with simplified residential-style installation.
The Battery-Box Mega uses lithium iron phosphate (LFP) battery cells and incorporates a four-layer safety architecture.
According to BYD, the system features IP66-rated dust and water protection, C5 corrosion resistance and an operating temperature range from -20°C to 55°C.
The company said the maintenance-free design eliminates the need for fluid replacement or routine inspections throughout the system’s operating life.
Flexible Design and High-Performance Inverter
The Battery-Box Mega adopts a modular stacked-tower design, with each battery module providing 12.5kWh of storage capacity.
The architecture supports flexible configurations from 62.4kWh to 262kWh, helping reduce installation time and upfront project costs.
The storage system is paired with BYD’s Power-Box TH inverter, which features a 42A high-current maximum power point tracker (MPPT) and supports photovoltaic oversizing of up to 200%.
The inverter also provides 150% off-grid overload capability for high-power equipment and delivers backup power switching in approximately 10 milliseconds.
Expanding Utility-Scale Storage
Alongside its residential portfolio, BYD also showcased its utility-scale energy storage products, including the BYD Haohan system, the next-generation GC Flux PCS and GC Master energy management system.
The company said its grid-forming battery storage solutions are supporting Europe’s transition toward cleaner electricity systems.
Earlier this month, BYD announced that Hungary’s largest battery energy storage project, developed by Greenvolt Power, had entered commercial operation.
BYD supplied the battery energy storage system for the 99.8MW/288.6MWh project.
The company said it has now delivered large-scale energy storage projects across more than 110 countries and regions worldwide.
The launch comes as competition in the battery storage sector continues to intensify. Earlier this month, Chinese battery manufacturer CATL introduced its Tener Sodium battery energy storage system, which it described as the world’s first field-validated sodium-ion battery storage solution.