BYD Battery-Box Premium HVS 12.8
Official manufacturer GLOBAL verified Aug. 31, 2026
Identity
| category | batteries |
| manufacturer | BYD |
| model | Battery-Box Premium HVS 12.8 |
| region | GLOBAL |
Electrical
| chemistry | LFP (LiFePO4) |
| communication_can | True |
| communication_rs485 | True |
| firmware_requirements | Per BYD Compatible Inverter List V2.21 (2025-08-20), each inverter row carries a minimum Battery-Box BMU/BMS firmware pair for HVS, e.g. Fronius Symo Hybrid / Symo GEN24 Plus 3.13/3.19; Primo GEN24 Plus 3.15/3.21; Verto Plus 3.26/3.31; SMA SBS 2.5 3.15/3.21; SBS 3.7-6.0 3.13/3.19; STP SE 3.16/3.24; Sunny Boy Smart Energy 3.23/3.28; KOSTAL Plenticore Plus 3.0 G2 and Plenticore G3 3.13/3.19; PIKO BA 3.16/3.24; Sungrow SH-RT 3.13/3.19; SH-RS 3.16/3.24; GoodWe ET5-10/BT 3.13,3.19; EHB 3.18; ET15-30 3.20,3.27; Solis RHI-5G 3.16,3.22; Deye AM2 3.19; Deye BM4 3.24. Document instruction: 'Always install the latest firmware on the Battery-Box!' |
| max_continuous_charge_current_a | 25 |
| max_continuous_discharge_current_a | 25 |
| max_continuous_power_kw | UNKNOWN (datasheet rates current only: 25 A continuous, 50 A / 3 s peak) |
| max_parallel_units | 3 |
| max_series_units | 5 |
| min_series_units_hv | 2 |
| nominal_energy_kwh | 12.8 |
| nominal_voltage_v | 512 |
| officially_supported_inverter_brands | ['Fronius', 'SMA', 'KOSTAL', 'SUNGROW', 'GoodWe', 'Solis', 'Deye', 'Ingeteam', 'KACO', 'Solplanet', 'GE', 'Canadian Solar', 'Hoymiles', 'Afore'] |
| officially_supported_inverter_models | ['Fronius Symo Hybrid (3-8 modules); Symo GEN24 Plus (2-5 / 4-8); Primo GEN24 Plus (2-3 / 4-7); Verto Plus (2-5 / 4-8)', 'SMA Sunny Boy Storage 2.5 (2-4, no parallel); SBS 3.7/5.0/6.0 (2-4 / 3-8); STP 5.0-10.0 SE (2-5 / 4-8); Sunny Boy Smart Energy 3.6-6.0 (2-4 / 3-8)', 'KOSTAL Plenticore Plus 3.0 G2 (2-5 / 4); Plenticore Plus 4.2-10.0 G2 (2-5 / 4-8); Plenticore BI 5.5-13 and BI xx/26 G2 (2-5 / 5-8); Piko MP Plus (2-3 or 2-5); PIKO 6.0/8.0/10 BA (2-4 / 4-8); Plenticore G3 (2-5 / 3-8)', 'SUNGROW SH5.0/6.0/8.0/10RT (2-5 / 4-8); SH3.0-6.0RS (2-4 / 3-8)', 'GoodWe ET (5-10kW)/BT (2-5 / 4-8); EH/BH (2-4 / 3-8); EHB (2-4 / 3-8); ET (15-30kW) (2-5 / 4-8)', 'Solis RHI-3P(5-10)K-HVES-5G; S6-EH3P(3-10)K-H-EU; S6-EH3P(3-10)K2-H; S6-EH3P(12-20)K-H; S6-EH3P(29.9-50)K-H', 'Deye SUN-(5-20)K-SG01HP3-EU-AM2 (2-5 / 4-8); SUN-50K-SG01HP3-EU-BM4 (2-5 / 4-8)', 'Ingeteam ISS 1Play 3TL M / 6TL M (2-4 / 3-8) - only with BCU produced since 1 October 2020', 'KACO Blueplanet hybrid 6.0-10.0 TL3; 6.0-12.0 NH3 M2; 8.0-12.0 NH3 M3', 'Solplanet ASW H-T2 / H-T3 Series; GE GEH 5.0/8.6/10-1U-10; Canadian Solar CSI-TE/HE/BHE; Hoymiles HYT-HV-EUG1/AUG1 and HAT-HV-EUG1; Afore AF(3-20)K-TH and AF25K/AF30K-TH'] |
| peak_current_a | 50 |
| supported_inverter_protocols | ['CAN', 'RS485'] |
| usable_energy_kwh | 12.8 |
| voltage_class | HV |
| voltage_range_v | 400-600 |
Physical / mechanical
| depth_mm | 298 |
| height_mm | 1461 |
| module_energy_kwh | 2.56 |
| module_nominal_voltage_v | 102.4 |
| module_weight_kg | 38 |
| mounting_type | ['floor'] |
| stack_dimensions_by_size_mm | HVS 5.1 762x585x298; HVS 7.7 995x585x298; HVS 10.2 1228x585x298; HVS 12.8 1461x585x298 (HxWxD) |
| stack_weight_by_size_kg | HVS 5.1 91; HVS 7.7 129; HVS 10.2 167; HVS 12.8 205 |
| terminal_locations | power and communication terminals on the BCU at the top of the tower |
| torque_specs | BCU hanger 5.5 N.m; module connections 2 N.m; wall bracket bolts 8 N.m; grounding 4 N.m (HVS/HVM Operating Manual) |
| weight_kg | 205 |
| width_mm | 585 |
Installation
| clearance_rear_mm | 12-19 (gap between the wall and the base) |
| indoor_outdoor | indoor and outdoor use (IP55) |
| installation_humidity_range | 5-95 % |
| installation_temperature_range_c | -10 to +50 ambient |
| max_installation_altitude_m | 3000 |
| maximum_modules_per_tower | 5 |
| maximum_towers_in_parallel | 3 |
| minimum_modules_per_tower | 2 |
| mounting_orientation | upright, floor-standing tower secured to a wall bracket |
| parallel_rules | 'Up to maximum three battery systems could be connected in parallel. BUT THE HVS SYSTEM CANNOT BE CONNECTED WITH THE HVM SYSTEM.' Compatible Inverter List V2.21 adds 'Every tower connected in parallel requires the same module quantity'. |
| surface_requirements | solid floor able to bear 205 kg (HVS 12.8); wall bracket required |
Environment
| charge_temperature_c | -10 to +50 with derating -10 to +5 |
| cooling_method | natural convection |
| discharge_temperature_c | -10 to +50 |
| ip_rating | IP55 |
| max_altitude_m | 3000 |
| operating_temperature_c | -10 to +50 (charge derating between -10 and +5) |
| relative_humidity | 5-95 % |
| round_trip_efficiency | >= 96 % |
| storage_soc | 30% <= SOC <= 60% for long-term storage |
| storage_temperature_c | -10 to +25 optimal; above +50 not allowed |
Interfaces & connectors
| battery_terminal_type | screw terminals on the BCU; conductor cross-section up to 16 mm2, cable outer diameter 4-9 mm, insulation stripping 16-18 mm |
| can | yes |
| protocol_notes | 8-pin terminal block on the BCU: 1-2 CAN H / RS485 A; 3-4 CAN L / RS485 B; 5-6 Ground; 7-8 12 V. Cat5/Cat5e or higher, maximum cable length 10 m. |
| rs485 | yes |
Controls & display
| buttons | 1 power button with integrated LED (5 s press to power off) |
| display_type | none (LED power button only) |
| leds | white/blue LED in the power button: glowing white = idle, slow white flash = charging, fast white flash = discharging, white flash + blue glow = SOC < 15% discharging, white+blue flash = error |
| local_display | False |
| mobile_app | Be Connect / Be Connect Plus |
| status_indicators | blue LED flash count encodes error codes 1-14 |
Protection
| fire_guidance | 'ABC or carbon dioxide extinguisher is nearby. Water cannot be used to extinguish the fire' |
| integrated_breakers_fuses | DC air switch in the BCU |
| integrated_dc_switch | True |
| over_current | peak output limited to 50 A for 3 s |
| over_temperature | yes - charge derating between -10 and +5 C |
| safety_interlock | 'The battery system cannot be turned on when the Operating Panel is removed' |
| short_circuit | DC air switch integrated in the BCU |
Certifications
| emc | [] |
| grid_codes | [] |
| other | ['UN38.3'] |
| regional | ['CE', 'CEC'] |
| safety | ['IEC62619', 'VDE2510-50'] |
Warranty & service
| cycle_life | UNKNOWN |
| field_replaceable_parts | ['battery module', 'BCU'] |
| standard_years | 10 |
| throughput_guarantee_mwh | UNKNOWN |
Packaging & logistics
| transport_restrictions | UN38.3 tested lithium battery; storage SOC 30-60 % |