--- title: "BYD Battery-Box Premium HVM 16.6 16.56 kWh Battery: Specs & Prices | ComparePV" description: "BYD Battery-Box Premium HVM 16.6 16.56 kWh home battery: 2 shop offers from 27 290 zł. Specs: 96.0% round-trip efficiency, 10 yrs warranty." source: "https://comparepv.com/battery/byd-battery-box-premium-hvm-16-6" updated: 2026-11-06 --- # BYD Battery-Box Premium HVM 16.6 ## Identity - **Manufacturer:** BYD - **Model:** Battery-Box Premium HVM 16.6 - **Series:** Battery-Box Premium HVS / HVM - **Usable energy:** 16.56 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/752708) | Poland | 27 290 zł incl. VAT | 1 647.95 zł/kWh | In stock | Last read 6 Nov 15:05 | | [www.solar-outlet.nl](https://comparepv.com/go/111562) | Netherlands | 6 989.95 € incl. VAT | | Not stated | Last read 6 Nov 00:11 | ## 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 | - | 0.68 | | | | Cycle life | - | 6000 | | | | Weight per kWh | - | 12.4 | | | | Warranty | 10 yrs | 10 yrs | Typical | 3 | ## Specification ### Capacity - **Usable energy:** 16.56 kWh - **Max system capacity:** 49.7 kWh - **Units in parallel:** 3 ### Power - **Max discharge current:** 50 A - **Max charge current:** 50 A - **Peak discharge current:** 75 A ### Efficiency and lifetime - **Round-trip efficiency:** 96.0 % ### Cells and voltage - **Voltage class:** High voltage - **Nominal voltage:** 307.2 V - **Operating voltage:** 240 to 354 V - **Cell technology:** LFP - **Cell management:** Cobalt-free ### Physical - **Dimensions:** 1694 × 585 × 298 mm - **Enclosure:** IP55 - **Mounting:** floor - **Operating temperature:** -10 to 50 °C ### Compatibility - **Compatible inverters:** Refer to BYD Battery-Box Premium HVS / HVM Compatible Inverter List - **Protocols:** CAN, RS485 ### Warranty and certificates - **Warranty:** 10 years - **Certifications:** VDE 2510-50, IEC 62619, CEC, CE, UN 38.3 ### Pros - **LFP chemistry without cobalt - thermal safety** - LFP cells do not exhibit the exothermic chain reaction characteristic of NMC cells under internal short circuits or overloads. When combined with IP55 protection, this allows for installation in a garage, boiler room, or technical room without the dedicated ventilation typically required by cobalt-based batteries. - **Scalability from 5.1-66.2 kWh within a single ecosystem** - HVS builds towers with capacities of 5.1-12.8 kWh (2-5 modules), while HVM builds towers with capacities of 8.3-22.1 kWh (3-8 modules). Connecting three identical towers in parallel provides capacities of 38.4 or 66.2 kWh - offering flexible scaling from small prosumer applications to semi-commercial facilities without the need for battery control units (BCUs). - **Wide compatibility with inverters (list V2.21)** - The official compatibility list for version 2.21 (May 2025) includes, among others, Fronius GEN24 Plus, SMA Tripower X, SolarEdge StorEdge, Victron Multiplus II, GoodWe ET Plus+, and Kostal Plenticore Plus - essentially, every popular 1- and 3-phase inverter available on the European market is natively supported by CAN/RS485. - **Module connection via connectors - no internal wiring required** - The modules are mechanically and electrically connected directly within the tower; eliminating separate cables between the modules reduces installation time and eliminates a whole class of installation errors (incorrect polarization, loose connections). - **BYD Tier-1 BNEF, 10-year warranty with ≥70% residual value** - BYD has been listed on BNEF's Tier-1 list for years. The Premium HVS/HVM warranty guarantees at least 70% of usable capacity after 10 years of operation (BYD Battery-Box Premium HVS&HVM Limited Warranty Europe V1.2 document), which, with a typical of 1-1.5 cycles per day, translates to over 4000 full cycles covered by the warranty. ### Cons - **Product line discontinued (2024)** - BYD is expected to discontinue production of the HVS/HVM models around 2024, replacing them with the HVS+/HVM+ models, which feature a new BCU (Battery Control Unit). The availability of original BCU components on the open market is limited and will decrease; obtaining after-sales service support after the expiration of the 10-year warranty (around 2034) may become difficult or unavailable. - **Round-trip efficiency of 96% - lower than newer competitors** - The declared efficiency of the RT system is 96% (according to the V1.9 datasheet), while Huawei LUNA2000-7/10/15 and Sungrow SBR256 achieve approximately 97.5%. With an annual charging volume of 4000 kWh, the difference in losses is approximately 60 kWh/year - equivalent to a few days of autonomy. ## About this series The BYD Battery-Box Premium HVS / HVM series comprises high-voltage energy storage units featuring a tower design, which can be built from modules and expanded during operation-without replacing the entire system. A key advantage is the **LFP (Lithium Iron Phosphate) chemistry, free of cobalt**, valued for its high thermal safety, operational stability, and long lifespan compared to NMC, which is particularly significant in home power plants, garages, or technical rooms. The system boasts **modular scalability**-you can precisely match the capacity to your self-consumption needs and easily expand it later, including by **connecting several identical towers in parallel**. Installation is facilitated by **internal plug-in module connections**, reducing installation time and cable work. The series is designed for compatibility with multiple 1- and 3-phase inverters and hybrid systems, and in backup/off-grid modes, it can power critical circuits. **A 10-year warranty and high cyclic endurance limit** ensure predictable costs and trouble-free operation for years. ## Questions ### What capacity can be achieved with the BYD Battery-Box Premium HVS or HVM? The HVS series offers usable capacities ranging from 5.1 to 12.8 kWh per tower (2-5 modules), and when three identical towers are connected in parallel, up to 38.4 kWh can be achieved. The HVM series offers capacities of 8.3-22.1 kWh per tower (3-8 modules) and up to 66.2 kWh with the maximum parallel configuration. This allows you to precisely match the system to your needs and expand it as required without replacing the entire installation. ### Why does the BYD Battery-Box Premium HVS/HVM use LFP chemistry instead of NMC? The LFP (lithium-iron-phosphate) technology is cobalt-free and features exceptionally high thermal stability - the risk of overheating or "thermal runaway" is significantly lower than in NMC batteries. This translates to safer operation in a garage, boiler room, or technical room. Furthermore, LFP batteries can withstand more charging cycles, which results in a longer lifespan for the entire system. ### Which inverters are compatible with the BYD Battery-Box Premium HVS and HVM? The HVS/HVM series is compatible with a wide range of 1- and 3-phase hybrid inverters from leading manufacturers, including SMA, Fronius, Kostal, Victron Energy, and Sungrow. Communication is carried out via CAN or RS485 interfaces. It is advisable to verify the current compatibility list with the installer or in the documentation for the specific inverter before purchasing, as the series is no longer in production and does not receive new certifications. ### Does the BYD Battery-Box Premium HVS/HVM function in low temperatures, and is it suitable for installation in an unheated garage? The system operates within a temperature range of -10°C to +50°C, and the enclosure has an IP55 rating, which ensures protection against dust and moisture. An unheated garage in the Polish climate typically falls within this range, although in extreme freezing temperatures below -10°C, performance and available capacity may temporarily decrease. The manufacturer recommends installation in locations where temperatures rarely drop below zero. ### What is the warranty on the BYD Battery-Box Premium HVS and HVM? BYD offers a 10-year warranty on the HVS/HVM series. This warranty covers both manufacturing defects and a specified minimum residual capacity after the warranty period. The long warranty, combined with the high cyclic efficiency (above 96%) and durability of LFP batteries, ensures predictable operating costs throughout the decade. ### Is the BYD Battery-Box Premium HVS/HVM still available for sale? The BYD Battery-Box Premium HVS/HVM series has been discontinued. New units may only be available from distributors and installers who have remaining stock in their warehouses - and the quantity is limited and decreasing. If you are looking for a currently produced equivalent from BYD, ask your installer about newer series of battery boxes from this manufacturer that have replaced this line. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/batteries/876ddd5b415ab733bdcf05d5.pdf) ## Alternatives | Battery | Usable energy | Round-trip | Power | Voltage | Difference | | --- | --- | --- | --- | --- | --- | | [FoxESS HS17.5](https://comparepv.com/battery/foxess-hs17-5) | 16.68 kWh | | | HV | +0.1 kWh | | [SMA Home Storage 16.4](https://comparepv.com/battery/sma-solar-technology-ag-sma-home-storage-16-4) | 16.4 kWh | 94.5% | 17.3 kW | HV | -0.2 kWh, -1.5 pp round-trip | | [Solplanet Ai-HB 175A](https://comparepv.com/battery/solplanet-ai-hb-175a) | 16.12 kWh | 95.0% | 10.8 kW | HV | -0.4 kWh, -1.0 pp round-trip | | [FoxESS ECS2900-H6](https://comparepv.com/battery/fox-ess-ecs2900-h6) | 15.55 kWh | 95.0% | | HV | -1.0 kWh, -1.0 pp round-trip | | [Dyness Tower T17](https://comparepv.com/battery/dyness-tower-t17) | 17.76 kWh | | 10.7 kW | HV | +1.2 kWh | | [Huawei LUNA2000-15-S0](https://comparepv.com/battery/huawei-luna2000-15-s0) | 15 kWh | | 5.0 kW | HV | -1.6 kWh | | [FoxESS ECS2900-H7](https://comparepv.com/battery/fox-ess-ecs2900-h7) | 18.14 kWh | 95.0% | | HV | +1.6 kWh, -1.0 pp round-trip | | [FoxESS ECS4300H-H4](https://comparepv.com/battery/fox-ess-ecs4300h-h4) | 14.93 kWh | 95.0% | | HV | -1.6 kWh, -1.0 pp round-trip | --- Source: https://comparepv.com/battery/byd-battery-box-premium-hvm-16-6