Sunsynk BMS for HV Series

  
By Sunsynk
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Sunsynk BMS for HV Series

Sunsynk BMS for HV Series - Why Choose

  • Dedicated high‑voltage battery management system for Sunsynk HV rack‑mount batteries, helping keep your system safe, balanced and within design limits.
  • Provides clear communication between Sunsynk HV batteries and compatible three‑phase hybrid inverters, simplifying setup, monitoring and fault‑finding.
  • Well suited to warehouses, logistics hubs and light industrial sites needing dependable high‑voltage battery storage with structured control.

Product overview

The Sunsynk BMS for HV Series is the control head for Sunsynk’s high‑voltage lithium‑ion rack systems. It works with HV battery modules and a high‑voltage control box to manage charge and discharge currents, monitor status and provide communication links to compatible Sunsynk inverters and external equipment.

Paired with the correct number of 5.12 kWh HV modules, this BMS allows you to build modular 15.36 kWh to 61.44 kWh systems for self‑consumption, peak‑shaving and backup in commercial and industrial environments. Installation must be carried out by a suitably qualified professional familiar with high‑voltage DC systems.

Key features of the Sunsynk HV BMS

  • Designed specifically for Sunsynk HV‑Series battery racks, coordinating up to twelve 5.12 kWh LiFePO4 modules in series via the high‑voltage control box.
  • Supports a high‑voltage DC bus in the typical range of 153.6 V to 614.4 V nominal (depending on module count), with corresponding operating voltage windows from 124.8 V up to 700 V.
  • CAN2.0 and RS485 communication for coordination between BMS, battery modules, external PCS/inverters and monitoring systems.
  • Works with rack‑mount HV systems that provide up to 61.44 kWh total energy and up to 55.29 kWh usable energy, giving flexible capacity for commercial loads.
  • Supplied as part of a documented system including high‑voltage control box, communication cables and power harnesses, easing design and installation.

Technical specifications

The Sunsynk High Voltage Series uses lithium ferro phosphate (LiFePO4 or LFP) rack‑mount modules managed by a high‑voltage control box and associated BMS. Each module has an energy of 5.12 kWh, a nominal voltage of 51.2 V and a capacity of 100 Ah.

  • Battery cell chemistry: Lithium Ferro Phosphate (LiFePO4 or LFP).
  • Module energy: 5.12 kWh.
  • Module nominal voltage: 51.2 V.
  • Module capacity: 100 Ah.
  • Module size: 440 (L) × 350 (W) × 150 (H) mm.
  • Module weight: 19 kg
  • Battery model number: SUNSYNK‑GX (X = 15,20,25,30,35,40,45,50,55,60) with variants G15, G20, G25, G30, G35, G40, G45, G50, G55, G60.
  • Battery module quantity in series (optional): 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12.
  • System nominal voltage: 153.6 V, 204.8 V, 256 V, 307.2 V, 358.4 V, 409.6 V, 460.8 V, 512 V, 563.2 V, 614.4 V (depending on module count).
  • System operating voltage: 124.8–175.2 V, 166.4–233.6 V, 208–292 V, 249.6–350.4 V, 291.2–408.8 V, 332.8–467.2 V, 374.4–525.6 V, 416–584 V, 457.6–642.4 V, 499.2–700 V.
  • System energy: 15.36 kWh, 20.48 kWh, 25.6 kWh, 30.72 kWh, 35.84 kWh, 40.96 kWh, 46.08 kWh, 51.2 kWh, 56.32 kWh, 61.44 kWh.
  • System usable energy: 13.82 kWh, 18.43 kWh, 23.04 kWh, 27.64 kWh, 32.25 kWh, 36.86 kWh, 41.47 kWh, 46.08 kWh, 50.68 kWh, 55.29 kWh.
  • Rated DC power: 15.36, 20.48, 25.6, 30.72, 35.84, 40.96, 46.08, 51.2, 56.32, 61.44 (as per system configuration).
  • Charge/discharge current: Recommended 50 A, nominal 100 A, peak discharge 125 A (2 mins, 25 °C).
  • Working temperature: Charge 0–55 °C, discharge −20–55 °C.
  • Status indicator: Yellow – battery high voltage power on; Red – battery system alarm.
  • Communication port: CAN2.0 / RS485.
  • Humidity: 5 %–85 % RH.
  • Altitude: ≤ 2000 m.
  • IP rating of enclosure: IP20.
  • Dimensions (W/D/H): 589 mm × 590 mm × 1640 mm; 589 mm × 590 mm × 2240 mm (depending on stack height).
  • Weight (approximate): 258 kg, 434 kg, 628 kg (depending on configuration).
  • Installation location: Rack mounting.
  • Storage temperature: 0–35 °C.
  • Recommended depth of discharge: 90 %.
  • Cycle life: 25 ± 2 °C, 0.5C/0.5C, EOL 70 % ≥ 6000.
  • Warranty: 10 years (warranty is due whichever is reached first of warranty period or cycle power).
  • Certification: CE / IEC62619 / VDE2510‑50 / UL1973 / UL9540A / UN38.3.
  • System components (summary): High‑voltage control box 750 V/100 A, 5.12 kWh battery module, 120 ohm terminal resistor, communication cables, positive and negative power cords, ground wire A and optional external PCS, 12 V power and communication cables.

Documents available for download

Always check the latest documentation before specifying, installing or commissioning the Sunsynk BMS for HV Series.

Shipping and availability

We ship the Sunsynk BMS for HV Series to the UK, Ireland, Africa, the Caribbean and worldwide. If a shipping rate is not shown at checkout, please contact us on +44 2080640335 or info@energian.co.uk for a tailored quote.

UK expert support

Energian offers UK‑based expert support for Sunsynk high‑voltage battery systems. Get in touch via phone, email or live chat if you need help with sizing, compatibility checks or system design, or if you would like to visit our office for an in‑person consultation.

As the Sunsynk BMS for HV Series is part of a high‑voltage rack system rather than a plug‑and‑play product, we strongly recommend installation and commissioning via our trusted professional partners or your chosen qualified installer. We can work directly with your contractor to ensure the BMS, battery racks and inverters are configured safely and in line with Sunsynk guidance and local regulations.