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Sunsynk 20.48kWh HV Battery System
Sunsynk 20.48kWh HV Battery System
Sunsynk 20.48kWh HV Battery System
Sunsynk HV series battery system — Modules, BMS and rack as one line, for the SG01HP3 three-phase hybrid.
High-voltage storage exists because current is what costs money. Series-wiring the modules raises the voltage and drops the current for the same power, which means thinner cable, smaller losses and less heat in a commercial installation.
Please read before ordering
| 4 x SUN-HV-5.12-BATT | Sunsynk 5.12kWh Single Battery Unit for HV Series | |
| 1 x SUN-HV-BMS | BMS for Sunsynk HV Series | |
| 1 x SUN-HV-20.48-BATTRACK-DOOR | Battery Cabinet with Door for Sunsynk 20.48kWh HV Battery | |
About the Sunsynk HV series battery system
This is a complete rack: 5.12 kWh modules in series, the BMS that talks to the inverter, and the cabinet with its door. What you add is the inverter and the cabling to it.
Module count is the decision that matters. Sunsynk say to keep the battery above 500 V, because below that the inverter limits its output. Twelve modules make 614.4 V; four make 204.8 V and will hold a 50 kW inverter well below its rating.
IP20 and rack mounted, charging from 0 °C and discharging from −20 °C.
Which inverter will run this battery?
This is a complete Sunsynk high-voltage rack: the modules, the BMS and the cabinet with its door.
This is the whole battery rather than a part of it — the modules, the BMS that talks to the inverter and the rack they sit in. It pairs with the Sunsynk SG01HP3 three-phase hybrid, which has two battery inputs and accepts 160 to 800 V. The Package Contents block on this page is the definitive list of what ships.
Hybrid inverter platforms in our range that take this architecture:
Inverters we stock that will run it:
Stack rules, cabling and what else the job needs
The details that decide whether this battery suits the system:
- 5.12 kWh and 51.2 V a module, 100 Ah. Three to twelve modules in a rack: 15.36 kWh at three, 61.44 kWh at twelve.
- Sunsynk's three-phase HV datasheet says to keep the battery above 500 V: below that the inverter limits its output, and at 430 V and 100 A a 50 kW machine gives 43 kW and raises overload errors above it. Twelve modules make 614.4 V and clear the line; four make 204.8 V and do not.
- Each battery string runs through one 50 A input on the inverter, so a string discharges at half a C whatever the inverter is rated at — 10.24 kW on a 20.48 kWh string, 30.72 kW on a 61.44 kWh one. The SG01HP3 has two inputs, so two strings double it.
- 50 A recommended and 100 A nominal charge and discharge, 125 A peak for two minutes.
- A system is modules plus a BMS plus the rack or cabinet with its door. The BMS and the rack are separate parts.
- 589 × 590 × 1,640 mm for a part-filled rack and 589 × 590 × 2,240 mm at twelve modules. 44 kg a module plus 85 kg of rack; a full 61.44 kWh rack is about 628 kg.
- IP20 and rack mounted — a plant room, not an outside wall. Charge 0 to 55 °C, discharge −20 to 55 °C, storage 0 to 35 °C.
- A second Sunsynk document quotes a 538 – 691 V window for the 61.44 kWh rack against the 499.2 – 700 V in the GX table used here. Design to the narrower one if you are close to the edge.
Where this battery earns its place
The HV series battery system is specified most often for these jobs.
Things worth knowing about this listing
- This configuration sits below the 500 V Sunsynk ask you to stay above. Four modules make 204.8 V nominal, and the SG01HP3 limits its output on a low battery voltage — at 430 V and 100 A a 50 kW inverter gives 43 kW and raises overload errors above that. Twelve modules make 614.4 V and clear the line.
- Each battery string discharges through one 50 A inverter input, which is half a C: 10.24 kW from a 20.48 kWh string and 30.72 kW from a 61.44 kWh one, whatever the inverter is rated at.
Sunsynk GX 20.48 technical data
Questions we get asked about this inverter
What is in the box?
The Package Contents block on this page is the definitive list: the 5.12 kWh modules, the BMS and the rack or cabinet with its door.
Will it hold a 50 kW inverter at full output?
Only the twelve-module rack gets close. Sunsynk say to keep the battery above 500 V, and each string discharges through one 50 A input — 30.72 kW on a 61.44 kWh rack, 10.24 kW on a 20.48 kWh one. The SG01HP3 has two inputs if you need more.
Can I add modules later?
Up to twelve in a rack. Beyond that you are adding a second rack and a second BMS on the inverter's other battery input.
How much of it can I use?
90 % of the nominal figure — 18.43 kWh of the 20.48, 55.29 kWh of the 61.44.
Can it go outside?
No. IP20, rack mounted, indoor.
Documents, advice and trade pricing
Every datasheet, certificate, installation manual and warranty document we hold for this product is in the Documents tab below. See the rest of our battery range, our hybrid inverters and our solar panels, or email sales@clearraysolar.com if you would like us to check a battery and inverter pairing before you order.
Build your complete solar system
Everything you need in one place.
- Inverters
- Batteries
- Mounting Systems
- Cabling & Accessories
- Protection Devices
Delivery times vary by region:
- UK — 1-2 business days
- Highlands & Islands — 1-2 business days
Returns accepted within 14 days of delivery for unused items in original packaging.
