Skip to product information
1 of 9

Suncoast Batteries

FES-512 Fusion 51.2V 100Ah (5.12kWh) LiFePO₄ Battery Module

FES-512 Fusion 51.2V 100Ah (5.12kWh) LiFePO₄ Battery Module

Regular price $3,649.00 AUD
Regular price Sale price $3,649.00 AUD
Sale Sold out
Taxes included. Shipping calculated at checkout.

Fusion ESS FES-512

51.2V 100Ah (5.12kWh) LiFePO₄ Battery Module

Residential • Commercial • Utility-Scale | Parallel up to 81.92kWh

10 Year Product Warranty

Australian Owned and Operated Business

Designed for easy installation across homes, businesses, and utility projects, the Fusion ESS FES-512 delivers dependable, scalable energy storage. Each 51.2V 100Ah (5.12kWh) module can be paralleled for systems up to 81.92kWh, integrates with industry-standard inverters, solar charge controllers, and EMS, and provides a low lifetime energy cost for both new installs and retrofits.

Why Choose Fusion FES-512?

  • Longer Cycle Life: Up to 10,000 cycles @ 50% DoD, 6,000 cycles @ 80% DoD, 2,000 cycles @ 95% DoD — minimises replacements and total cost of ownership.
  • More Usable Energy: High usable capacity even at elevated discharge rates, outperforming lead-acid alternatives.
  • Advanced BMS Protection: Under/over-voltage, current and temperature protections for safe, efficient operation.
  • Safety First: LiFePO₄ chemistry with high-temp thermal fuse and flame-retardant additives.
  • Scalable Architecture: Parallel connection up to 81.92kWh (cabinet-mounted, ground configuration) with straightforward install.
  • Clear Visuals: Per-module LCD shows voltage, current, state of charge (SOC), and temperature.
  • Broad Compatibility: Integrates with standard inverters, MPPT solar charge controllers, and energy management systems.

🔋 What is a lithium ESS Module Battery ?

A lithium energy storage system (ESS) module designed for residential, commercial, and utility-scale solar and backup power.

Each unit provides 5.12kWh of usable energy at 51.2V nominal (commonly called 48V)

Multiple modules can be connected in parallel up to 81.92kWh, making it highly scalable.

Uses LiFePO₄ chemistry, which is safer, more stable, and longer lasting than older lithium or lead-acid batteries.


⚙️ Key Features

Long Cycle Life:
Up to 10,000 cycles at 50% depth of discharge (DoD), 6,000 cycles at 80% DoD, and 2,000 cycles at 95% DoD.
→ That’s 10–15+ years of service life depending on usage.

High Performance:
Maintains strong energy delivery even at higher discharge rates.

Advanced BMS (Battery Management System):
Built-in protections for over/under-voltage, over-current, and high/low temperatures.

Safety:
LiFePO₄ chemistry is naturally stable, with flame-retardant additives and thermal fuses for extra security.

Scalability:
Can be paralleled for larger systems — from a single home battery to a large commercial bank of 80+kWh.

Integration Ready:
Works with industry-standard inverters, MPPT solar charge controllers, and energy management systems.

User-Friendly:
LCD display on each module shows voltage, current, SOC (state of charge), and temperature.

Durable Housing:
Enclosed in a weather-resistant, ground-mounted cabinet with a lockable door and UV-resistant glass.


🏡 Where It’s Used

Residential: Off-grid homes, hybrid solar systems, or as battery backup during outages.

Commercial: Energy storage for peak shaving, reducing grid demand charges, and backup power.

Utility-Scale: Large modular systems for solar farms or microgrids.

Retrofits: Upgrade from old lead-acid banks to modern lithium storage.


The Fusion ESS FES-512 is a scalable, safe, and long-lasting lithium battery module that can power anything from a home solar system to a large commercial project. It’s designed to give maximum lifespan, low lifetime cost, and reliable performance.

Applications

  • Off-grid & hybrid solar storage for homes and small businesses
  • Commercial & light industrial peak-shaving and backup
  • Utility-scale modular storage builds
  • Retrofit upgrades from lead-acid banks to high-efficiency LiFePO₄

Technical Highlights

  • Model: FES-512 (Fusion ESS)
  • Chemistry: LiFePO₄ (Lithium Iron Phosphate)
  • Nominal Voltage / Capacity: 51.2V / 100Ah
  • Energy per Module: 5.12kWh
  • Scalability: Parallel up to 81.92kWh total
  • Enclosure: Weather-resistant, ground-mount cabinet with key-lock door & UV-protective glass
  • Display: On-module LCD — Voltage, Current, SOC, Temperature
  • Integration: Compatible with industry-standard inverters, MPPTs & EMS

Financing available for projects of any size. Need help scoping capacity or compatibility? Contact us for a tailored design.

 ADD A BATTERY CABINET FOR THIS BATTERY STYLE 

View full details
🎉 NEW YEAR BATTERY SALE ON NOW 🎉

Why Buy From Suncoast Batteries Sunshine Coast Delivered Fast !

Australian owned and operated. We deliver batteries direct to your door, with honest advice and local support you can rely on - shop the best batteries & support local business!

Suncoast Batteries provides a 24/7 mobile car battery replacement service across the Sunshine Coast, including a free battery test and an industry-leading 3-year nationwide warranty. We operate 7 days a week, with no membership fees and no call-out fees* — just quality batteries Sunshine Coast batteries delivered and fitted fast, wherever you are on the Sunshine Coast.

Suncoast Batteries is a local online automotive and marine battery store, offering mobile delivery and professional fitting* across the Sunshine Coast region.

Shop batteries online we will urgently deliver your new car battery throughout the Sunshine Coast get Batteries fast we offer car battery replacement and roadside servicing 24/7 on the Sunshine Coast.

LIVE CHAT NOW

WHOLESALE TRADE

Are You a Business? Unlock Trade & Wholesale Benefits

Sign up for a Trade or Wholesale Account by completing our quick and easy application form.

Exclusive Trade Pricing on the full SSB Batteries Range

👉 Apply now and get approved fast!