Sunsynk 5.12kWh HV Battery – Stackable LFP Module

Sunsynk 5.12kWh HV Battery: The Scalable Lithium Storage Module for Flexible Solar Systems

The Sunsynk 5.12kWh High Voltage Battery is a premium lithium iron phosphate (LFP) storage solution designed for solar users who want flexible, modular energy storage. Built to scale and engineered for safety, each unit offers reliable performance and seamless integration into Sunsynk’s high-voltage ecosystem.

Whether you’re powering a single-family home or building a commercial battery bank, this unit provides efficient energy retention, long lifespan, and the peace of mind that comes with top-tier cell chemistry and robust system protection.

Reliable LFP Technology with Enhanced Safety

Utilising lithium iron phosphate cells, the Sunsynk HV battery delivers enhanced thermal stability, long cycle life, and resistance to degradation. It’s engineered to reduce fire risk, operate across a wide temperature range, and maintain high efficiency for over 6,000 cycles.

• Safer and longer-lasting than conventional lithium-ion chemistries
• Charge/discharge efficiency up to 98%
• Excellent performance in varied UK weather conditions

Modular Design for Easy Expansion

Each 5.12kWh module can be stacked with up to 11 others using a Sunsynk HV BMS, forming systems up to 61.44kWh. This makes it ideal for users who want to start small and scale their energy storage as their consumption or solar output increases.

Built for Seamless Integration

This HV battery is designed to communicate effortlessly with Sunsynk hybrid inverters and the dedicated Sunsynk BMS. The system dynamically adjusts charging behaviour based on load profiles, time-of-use tariffs, or solar generation, helping you maximise your return on renewable energy.

Robust Construction with Indoor Safety Standards

Encased in a durable IP20-rated enclosure, the battery is designed for indoor installations and conforms to EN/IEC safety standards. It is lightweight enough for installers to handle easily but sturdy enough to be housed in cabinets or racks for a clean, professional finish.

• Compact form factor: 589 × 590 × 160mm (approx. per unit)
• Weight: ~44–50kg per module
• Ideal for rack or cabinet installations

Why Evergy Recommends This Product

The 5.12kWh HV battery strikes the perfect balance between size, safety, and scalability. It’s ideal for homes with growing energy needs or commercial sites planning to upgrade incrementally. Plus, its LFP chemistry provides peace of mind over a decade-long lifespan.

Ideal for Residential and Commercial Projects

Whether you’re a homeowner with rooftop solar panels or a business investing in clean energy, this battery supports scalable storage tailored to your future needs. It integrates smoothly into existing solar setups and can be managed centrally through a compatible BMS.

Technical Specifications

• Energy Capacity: 5.12kWh usable
• Chemistry: Lithium Ferro-Phosphate (LFP)
• Max Charge/Discharge Current: 100A
• Voltage Range: 538–691V (as part of system)

Full technical specifications are available under the datasheet tab.

Build Your Storage Stack with Evergy

Looking to scale up? Pair this battery with the Sunsynk BMS and our full range of solar inverters for a complete storage solution. Need help? Visit our contact page or browse our solar battery guide to learn more.

FAQs

Can I use this battery outdoors?
No, it’s designed for indoor use only and should be housed in a protected environment.

What’s the maximum system size with this module?
You can stack up to 12 batteries (61.44kWh total) with a single Sunsynk BMS.

How long does the battery last?
With proper use, the battery has a 10-year warranty and over 6,000 cycles, maintaining strong performance over time.