BYD Battery-Box Premium HVM 13.8

Battery storage system BYD Battery-Box Premium HVM 13.8

Modular high‑voltage energy storage designed for PV installations, offering scalable capacity, outdoor‑ready protection, and flexible integration with a range of hybrid inverters for residential and commercial use.

Applications and use cases

The BYD Battery-Box Premium HVM 13.8 is a modular energy storage solution sized for on‑grid PV systems, backup power, and off‑grid scenarios. Its expandable architecture makes it suitable for evolving solar installations, from single‑home setups to small commercial rooftops, allowing energy buffering, peak‑shaving, and reliable power supply when sunlight fluctuates.

• Modular series configuration to tailor usable capacity from 8.3 to 22.1 kWh by using 3–8 HVM modules in series
• Direct parallel expansion by stacking up to three identical HVM stacks, enabling up to 66.2 kWh total capacity
• Indoor or outdoor installation with IP55 protection for versatile deployment
• Seamless PV integration with commonly used hybrid inverters for flexible energy storage
• Scalable energy storage plan that grows with future PV capacity or backup needs

Key electrical and performance parameters

Designed for dependable, efficient energy storage in a high‑voltage architecture, the system emphasizes safety, efficiency, and practical integration into existing PV configurations. For detailed electrical data, the attached PDF specification provides full characteristics.

• Usable capacity determined by module count in series (8.3–22.1 kWh) with scalable options to 66.2 kWh when stacked in parallel
• Nominal system voltage around 256 V with an operating range of approximately 200–300 V
• Efficiency rated around 96% for charging and discharging cycles
• Compact enclosure supporting IP55 protection, enabling safe use in varied environments
• Dimensions roughly 298 mm (L) × 585 mm (W) × 1,411 mm (H) and weight about 205 kg per stack
• Modular, plug‑in connection between HVM modules for straightforward installation and maintenance

Battery and backup capabilities

Engineered for reliable energy backup and flexible energy management, the HVM system uses LiFePO4 chemistry to deliver safety, longevity and steady performance across configurations. The architecture supports scalable backups by adding HVM modules or parallel towers as energy demands grow.

• Expandable capacity through additional HVM modules or parallel towers, up to 66.2 kWh total
• LiFePO4 (LFP) chemistry for enhanced safety and long cycle life
• High protection rating and outdoor suitability enable versatile placement near PV arrays or in auxiliary spaces
• Long‑term reliability supported by a manufacturer warranty framework
• Attached PDF specification available for deeper technical details and installation guidance