--- title: "BYD Battery-Box Premium HVS 12.8 12.8 kWh Battery: Specs & Prices | ComparePV" description: "BYD Battery-Box Premium HVS 12.8 12.8 kWh home battery: 1 shop offer from 21 370 zł. Specs: 96.0% round-trip efficiency, 12.8 kW continuous, 205.0 kg." source: "https://comparepv.com/battery/byd-battery-box-premium-hvs-12-8" updated: 2026-11-06 --- # BYD Battery-Box Premium HVS 12.8 ## Identity - **Manufacturer:** BYD - **Model:** Battery-Box Premium HVS 12.8 - **Series:** BatteryBox Premium HVS - **Usable energy:** 12.8 kWh - **Voltage class:** High voltage - **Cell technology:** LFP ## Price offers Prices are the figure each shop printed, on that shop's side of VAT. | Shop | Market | Price | Per kWh | Availability | Last read | | --- | --- | --- | --- | --- | --- | | [Solaris Energy](https://comparepv.com/go/752711) | Poland | 21 370 zł incl. VAT | 1 669.53 zł/kWh | In stock | Last read 6 Nov 15:05 | ## How it compares Compared against 36 batteries from 12 to 20 kWh. Ranks are within that class. | Measure | This battery | Class median | Standing | Rank in class | | --- | --- | --- | --- | --- | | Round-trip efficiency | 96.0% | 95.0% | Strong - top 12% | 1 | | Power per kWh | 1.00 | 0.68 | Typical | 7 | | Cycle life | - | 6000 | | | | Weight per kWh | 16.0 | 12.4 | Weak - bottom 8% | 28 | | Warranty | 10 yrs | 10 yrs | Typical | 3 | ## Specification ### Capacity - **Usable energy:** 12.8 kWh - **Nominal energy:** 12.80 kWh - **Depth of discharge:** 100 % - **Module energy:** 2.56 kWh - **Modules per stack:** 2 to 5 - **Max system capacity:** 12.8 kWh - **Units in parallel:** 3 ### Power - **Continuous discharge power:** 12.80 kW - **Continuous charge power:** 12.80 kW - **Peak discharge power:** 25.60 kW - **Max discharge current:** 25 A - **Max charge current:** 25 A - **Peak discharge current:** 50 A ### Efficiency and lifetime - **Round-trip efficiency:** 96.0 % ### Cells and voltage - **Voltage class:** High voltage - **Nominal voltage:** 512.0 V - **Operating voltage:** 400 to 600 V - **Cell technology:** LFP - **Cell management:** Cobalt-free ### Physical - **Dimensions:** 1461 × 585 × 298 mm - **Weight:** 205.0 kg - **Enclosure:** IP55 - **Mounting:** floor - **Outdoor installation:** Yes - **Operating temperature:** -10 to 50 °C ### Compatibility - **Protocols:** CAN, RS485 ### Warranty and certificates - **Warranty:** 10 years - **Certifications:** VDE2510-50, IEC62619, CEC, CE, UN38.3 ### Pros - **Modular scalability up to 38.4 kWh** - A single tower segment of the HVS system offers 5.1-12.8 kWh (2-5 modules of 2.56 kWh), and a parallel connection of up to 3 identical towers allows for a total of 38.4 kWh within the same installation - without the need to replace the BCU or inverter. This represents a rare level of flexibility in the residential market. - **LFP Chemistry - Safety and Durability** - Lithium-iron-phosphate (LFP) batteries do not contain cobalt or nickel, which eliminates the risk of thermal runaway, a characteristic issue in NMC chemistry. LFP exhibits significantly slower degradation when subjected to daily deep cycling (DoD 80-100%) compared to NMC, which is particularly important in applications with frequent emergency power usage. - **Wide range of inverter compatibility** - The HVS series is certified for use with inverters from Fronius, SMA, SolarEdge, GoodWe, Kostal, Sungrow, and Victron - both single-phase and three-phase. This allows for integration with most of the hybrid systems commonly used in Poland without the need to purchase a dedicated inverter. - **High-voltage architecture (up to 512 V DC)** - The system's nominal voltage is 512 V DC, which translates to a charging and discharging efficiency of 96% (according to the manufacturer's specifications in the v1.7 datasheet). The high DC bus voltage reduces losses in the wiring and the load on the inverter's converters. - **IP55 protection and a wide operating temperature range** - The IP55 level of protection (dust and water spray) and operating range of -10 to +50°C allow the system to be installed in a garage, boiler room, or technical room without the need for an additional enclosure. This is a significant advantage compared to batteries with IP21-IP31 protection, which require a dry and heated environment. ### Cons - **The series has ended - limited support** - Production of the BatteryBox Premium HVS series is scheduled to conclude in 2025. The successors are HVS+, HVM+ (an upgraded BCU), and HVB (Blade Battery, with a 15-year warranty). The availability of original expansion modules and spare parts will gradually decrease, which could make it more difficult to scale or repair installations after 2026-2027. - **Capacity guarantee: only 60% after 10 years** - The HVS warranty documentation (Europe Limited Warranty) guarantees that the usable capacity will remain ≥60% after 10 years or when the throughput limit is reached - whichever comes first. For comparison, the Tesla Powerwall 3 guarantees ≥70% after 10 years, while the BYD HVB successor offers a 15-year warranty, making the 60%/10-year threshold significantly weaker compared to current market offerings. ## About this series The BYD BatteryBox Premium HVS series is a high-voltage energy storage system designed for true installation flexibility - from a typical home with photovoltaics to more demanding systems with backup power. The key feature of this line is its **modular design**, which allows for phased expansion without replacing the entire unit - alongside increasing self-consumption or backup requirements. The applied chemistry, **LFP (Lithium Iron Phosphate)**, is cobalt-free and valued for its high thermal safety, operational stability, and long lifespan during daily cycling. In practice, this means safer operation in garages or boiler rooms and predictable capacity aging. The HVS series offers a **long warranty** and a high energy flow rate, translating to multi-year profitability - even with frequent charging and discharging. A major advantage is its **wide compatibility with hybrid and battery inverters** (single- and three-phase), facilitating integration in both on-grid systems and backup systems, as well as selected off-grid projects. ## Questions ### What is the warranty on the BYD BatteryBox Premium HVS, and what does it cover? BYD provides a 10-year manufacturer's warranty on the BatteryBox Premium HVS series. This warranty covers the capacity remaining at a minimum of 60% after the warranty period, as well as a specified energy flow limit. The high cycle life makes this series cost-effective, even with daily, intensive use in combination with a photovoltaic system. ### How much energy can I store in a BYD BatteryBox Premium HVS system, and is it possible to expand it? A single HVS (hybrid vehicle system) offers a usable capacity ranging from 5.1 to 12.8 kWh (using 2 to 5 modules of 2.56 kWh each). Due to its modular design, additional modules can be purchased without replacing the entire system. Furthermore, three HVS systems can be connected in parallel, resulting in a total capacity of up to 38.4 kWh - which is sufficient for larger homes or facilities with high backup power requirements. ### Which inverters are compatible with the BYD BatteryBox Premium HVS? The HVS series is compatible with a wide range of hybrid and battery inverters, both single-phase and three-phase. The official compatibility list includes brands such as Fronius (Symo GEN24 Plus, Primo GEN24 Plus), SMA, SolarEdge, GoodWe, Victron Energy, and many others. It is advisable to check the current list of compatible inverters on bydbatterybox.com before purchasing, as specific firmware versions are required. ### Why is the LFP chemistry in BYD BatteryBox Premium HVS considered safer than NMC? LFP (lithium-iron-phosphate) batteries do not contain cobalt or nickel, which are responsible for thermal runaway in NMC batteries. The LFP technology is characterized by higher thermal and chemical stability, which means a lower risk of fire even in the event of mechanical damage or deep discharge. This is a significant advantage for installations in garages, boiler rooms, or basements, as confirmed by over 4,000 guaranteed cycles of operation. ### Is the BYD BatteryBox Premium HVS suitable for emergency (backup) power in the event of a power outage? Yes, the HVS series supports backup power (EPS/backup) functionality, but this requires a hybrid inverter with this feature. The system automatically switches over in the event of a power outage and supplies selected circuits in the house. The range of supported devices depends on the capacity of the installed battery and the inverter's power. The HVS series is also suitable for specific off-grid projects. ### Is the BYD BatteryBox Premium HVS series still available for sale? The BYD BatteryBox Premium HVS series is marked as discontinued by the manufacturer. This means that BYD has ceased production of this product and is replacing it with newer solutions. Existing units in distributor warehouses may still be available, but it is advisable to verify the availability of spare parts and expansion modules in the long term before making a purchase. It is worth considering the currently produced alternatives from BYD. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/batteries/4072228ae1118b4dc085412a.pdf) ## Alternatives | Battery | Usable energy | Round-trip | Power | Voltage | Difference | | --- | --- | --- | --- | --- | --- | | [Pylontech Force H2 (FH9637M)](https://comparepv.com/battery/pylontech-force-h2-fh9637m) | 12.79 kWh | | | HV | Similar on paper | | [FoxESS ECS2900-H5](https://comparepv.com/battery/fox-ess-ecs2900-h5) | 12.96 kWh | 95.0% | | HV | +0.2 kWh, -1.0 pp round-trip | | [SMA Home Storage 13.1](https://comparepv.com/battery/sma-solar-technology-ag-sma-home-storage-13-1) | 13.12 kWh | 94.5% | 13.8 kW | HV | +0.3 kWh, -1.5 pp round-trip, +1.0 kW | | [FoxESS HS12.5](https://comparepv.com/battery/foxess-hs12-5) | 11.91 kWh | | | HV | -0.9 kWh | | [BYD Battery-Box Premium HVM 13.8](https://comparepv.com/battery/byd-battery-box-premium-hvm-13-8) | 13.8 kWh | 96.0% | | HV | +1.0 kWh | | [Huawei LUNA2000-14-S1](https://comparepv.com/battery/huawei-luna2000-14-s1) | 13.8 kWh | | 7.0 kW | HV | +1.0 kWh, -5.8 kW | | [Solplanet Ai-HB 150A](https://comparepv.com/battery/solplanet-ai-hb-150a) | 13.82 kWh | 95.0% | 9.2 kW | HV | +1.0 kWh, -1.0 pp round-trip, -3.6 kW | | [Deye BOS-G15](https://comparepv.com/battery/bos-g15) | 13.82 kWh | | | HV | +1.0 kWh | --- Source: https://comparepv.com/battery/byd-battery-box-premium-hvs-12-8