• AlphaEss 40.4kWh Battery
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Alpha ESS 40.4kWh Battery + Smile S5 G3 Hybrid Inverter Bundle (Up to 10kW PV Input)

Alpha ESS 40.4kWh Battery + Smile S5 G3 Hybrid Inverter Bundle (Up to 10kW PV Input)

$9,950.00
$0.00 $9,950.00
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Overview

📦 About This Bundle

The Alpha ESS 40.4 kWh Battery, paired with the Alpha ESS SMILE-S5 G3 5 kW Hybrid Inverter (supporting up to 10 kW PV input), delivers an extremely high-capacity residential and light commercial storage solution — ideal for large homes, off-grid capable living, farms, and energy-intensive properties.

This advanced Alpha ESS system allows you to store a huge amount of solar energy, dramatically reduce reliance on the grid, and maintain full operational continuity during power outages — while securing significant savings through Australia’s federal and state battery rebates.

Whether you are upgrading an existing solar installation or deploying a new one, this configuration helps you:

  • Maximise the use of solar day and night
  • Reduce electricity bills by increasing self-consumption
  • Maintain critical home and business loads during outages
  • Access valuable government rebate incentives

Featuring 40.4 kWh usable storage and a 5 kW hybrid inverter, this bundle provides:

  • Reliable charging from up to 10 kW rooftop PV
  • Smooth single-phase supply for residential circuits
  • Seamless switching between solar, battery, and grid supply

This system can typically support large household energy loads — including EV charging, HVAC, pumps, refrigeration, and continuous appliances — for 30–48 hours, depending on usage patterns.

Supported by a 10-year product warranty, smart Alpha Cloud monitoring, and expert CEC-accredited installation, this system ensures maximum energy independence and exceptional lifetime savings.

🔑 Key Features

 

  • 40.4 kWh usable capacity — Ultimate storage for high-demand homes & off-grid resilience
  • 5 kW single-phase hybrid inverter — Efficient and stable residential performance
  • Blackout protection — Keeps essential loads running during grid failure
  • Advanced LFP (Lithium Iron Phosphate) battery chemistry — Superior safety & cycle life
  • Modular + expandable — Scale storage as energy needs increase
  • Smart monitoring via Alpha Cloud — Real-time system visibility and remote control
  • All-weather rated — IP65 inverter suitable for outdoor installation
  • Quiet operation — Low-noise performance for residential comfort
  • 10-year comprehensive warranty — Full protection for battery + inverter

🏷️ About the Brand – Alpha ESS

Founded in 2012, Alpha ESS is a leading global battery storage manufacturer with systems deployed in 90+ countries.

Why Australians choose Alpha ESS:

 

  • Local Australian service & support capability
  • CEC-approved and compliant with Australian standards
  • Industry-leading safety using LFP technology
  • Modern design + intelligent monitoring features
  • Eligible for national and state rebate programs

Alpha ESS systems are trusted for reliability, modern design and affordability.

💰 How are prices calculated?

We like to keep things simple and transparent, so you always know what you’re paying for — and what you’re saving.

Total Price = Battery Price – Federal Battery Rebate

All eligible battery systems receive a federal rebate based on usable capacity. The rebate is currently calculated as:

$350 × Usable kWh of the battery

For example, let’s say you’re looking at a battery system with 15 kWh usable capacity. The rebate would be:

$350 × 40.4 = 14,140.00 federal rebate

So if the system’s full retail price is $17,000, the displayed price on our website would be:

$24,090.00 – 14,140.00 = $9,950.00

This is the amount you’d typically pay (incl. GST) for standard installation. 

✅ No paperwork is needed — we apply the rebate upfront and handle the claim process for you.

✅ Our Online Price Includes:

  • The full battery + hybrid inverter bundle
  • Federal rebate already applied
  • Standard installation in metro areas
  • Monitoring app setup and commissioning
  • Certified installation by a CEC-accredited professional
  • GST included

📌 Final Quote May Vary Based On:

  • Your property’s location and accessibility
  • Switchboard condition or upgrade requirements
  • Distance between the switchboard and the battery location
  • Additional installation materials, if needed

We’ll provide a personalised quote before any work begins — no surprises, no pressure. 
View full details
Overview

Overview

📦 About This Bundle

The Alpha ESS 40.4 kWh Battery, paired with the Alpha ESS SMILE-S5 G3 5 kW Hybrid Inverter (supporting up to 10 kW PV input), delivers an extremely high-capacity residential and light commercial storage solution — ideal for large homes, off-grid capable living, farms, and energy-intensive properties.

This advanced Alpha ESS system allows you to store a huge amount of solar energy, dramatically reduce reliance on the grid, and maintain full operational continuity during power outages — while securing significant savings through Australia’s federal and state battery rebates.

Whether you are upgrading an existing solar installation or deploying a new one, this configuration helps you:

  • Maximise the use of solar day and night
  • Reduce electricity bills by increasing self-consumption
  • Maintain critical home and business loads during outages
  • Access valuable government rebate incentives

Featuring 40.4 kWh usable storage and a 5 kW hybrid inverter, this bundle provides:

  • Reliable charging from up to 10 kW rooftop PV
  • Smooth single-phase supply for residential circuits
  • Seamless switching between solar, battery, and grid supply

This system can typically support large household energy loads — including EV charging, HVAC, pumps, refrigeration, and continuous appliances — for 30–48 hours, depending on usage patterns.

Supported by a 10-year product warranty, smart Alpha Cloud monitoring, and expert CEC-accredited installation, this system ensures maximum energy independence and exceptional lifetime savings.

🔑 Key Features

 

  • 40.4 kWh usable capacity — Ultimate storage for high-demand homes & off-grid resilience
  • 5 kW single-phase hybrid inverter — Efficient and stable residential performance
  • Blackout protection — Keeps essential loads running during grid failure
  • Advanced LFP (Lithium Iron Phosphate) battery chemistry — Superior safety & cycle life
  • Modular + expandable — Scale storage as energy needs increase
  • Smart monitoring via Alpha Cloud — Real-time system visibility and remote control
  • All-weather rated — IP65 inverter suitable for outdoor installation
  • Quiet operation — Low-noise performance for residential comfort
  • 10-year comprehensive warranty — Full protection for battery + inverter

🏷️ About the Brand – Alpha ESS

Founded in 2012, Alpha ESS is a leading global battery storage manufacturer with systems deployed in 90+ countries.

Why Australians choose Alpha ESS:

 

  • Local Australian service & support capability
  • CEC-approved and compliant with Australian standards
  • Industry-leading safety using LFP technology
  • Modern design + intelligent monitoring features
  • Eligible for national and state rebate programs

Alpha ESS systems are trusted for reliability, modern design and affordability.

💰 How are prices calculated?

We like to keep things simple and transparent, so you always know what you’re paying for — and what you’re saving.

Total Price = Battery Price – Federal Battery Rebate

All eligible battery systems receive a federal rebate based on usable capacity. The rebate is currently calculated as:

$350 × Usable kWh of the battery

For example, let’s say you’re looking at a battery system with 15 kWh usable capacity. The rebate would be:

$350 × 40.4 = 14,140.00 federal rebate

So if the system’s full retail price is $17,000, the displayed price on our website would be:

$24,090.00 – 14,140.00 = $9,950.00

This is the amount you’d typically pay (incl. GST) for standard installation. 

✅ No paperwork is needed — we apply the rebate upfront and handle the claim process for you.

✅ Our Online Price Includes:

  • The full battery + hybrid inverter bundle
  • Federal rebate already applied
  • Standard installation in metro areas
  • Monitoring app setup and commissioning
  • Certified installation by a CEC-accredited professional
  • GST included

📌 Final Quote May Vary Based On:

  • Your property’s location and accessibility
  • Switchboard condition or upgrade requirements
  • Distance between the switchboard and the battery location
  • Additional installation materials, if needed

We’ll provide a personalised quote before any work begins — no surprises, no pressure. 
Plan Your Install

🛠️ Plan Your Install

Before we can confirm your quote or schedule an installation, we need to understand a bit about how and where you'd like the battery installed.

  • ✅ Whether you're installing the battery inside (garage) or outside (side of house)
  • ✅ Whether your system is being installed as an AC-Coupled setup (added to an existing solar system), or a DC-Coupled setup (as part of a new installation or replacing an exising inverter)

These options affect:

  • How the system is wired
  • Where components can be safely mounted
  • What rebates may apply
  • The type of photos we’ll need from you

Choose your scenario below:

🏠 Garage Install – DC-Coupled

A battery and a hybrid inverter were installed inside the garage, replacing the old inverter.

📷 Photos we need from you:

  • Photo of your Switchboard
  • Garage wall where the battery will go
  • Wide shot of the garage area
  • Existing solar inverter (if applicable)
🏠 Garage Install – AC-Coupled

Battery added to existing solar system, installed in the garage.

📷 Photos we need from you:

  • Existing solar inverter
  • Photo of your Switchboard
  • Proposed battery location in garage
  • Wide shot of garage area
🏡 Outdoor Install – DC-Coupled

Battery and hybrid inverter installed outside, replacing the old inverter.

📷 Photos we need from you:

  • Photo of your Switchboard
  • Outdoor wall where battery + inverter will go
  • Photo of outdoor wall where battery will go
  • Existing solar inverter (if applicable)
🏡 Outdoor Install – AC-Coupled

Battery added to existing solar system, installed outside the home.

📷 Photos we need from you:

  • Existing inverter location
  • Wall where battery will go
  • Photo of your Switchboard
  • Wide shot of outdoor area (for clearance/access)

📤 Send these photos with your quote request — or upload them using our quote form to fast-track your assessment.
FAQs

❓ Frequently Asked Questions

Q 1 : What is the AlphaESS SMILE-M5-S?

A: The AlphaESS SMILE-M5-S is an all-in-one residential energy storage system featuring a 5kW hybrid inverter and expandable LiFePO4 battery storage from 5kWh to 30kWh.

Q 2 : How much battery capacity does the SMILE-M5-S offer?

A: The system is expandable from 5kWh up to 30kWh using stackable battery modules, making it suitable for different household energy needs.

Q 3 : What battery technology is used in the AlphaESS SMILE-M5-S?

A: The system uses high-quality Lithium Iron Phosphate (LiFePO4 or LFP) battery technology, known for its safety, long lifespan, and reliability.

Q 4 : What inverter is included with the SMILE-M5-S?

A: The system includes a 5kW single-phase hybrid inverter that can manage solar generation, battery storage, and grid interaction.

Q 5 : Can the AlphaESS SMILE-M5-S provide backup power during outages?

A: Yes. The system includes UPS (Uninterruptible Power Supply) backup functionality, helping keep essential appliances running during power outages.

Q 6 : How much solar PV can the SMILE-M5-S support?

A: The inverter supports up to 10,000W of solar PV input power, allowing homeowners to maximize solar energy generation and storage.

Q 7 : Does the SMILE-M5-S support WiFi monitoring?

A: Yes. The system supports both WiFi and Ethernet connectivity, enabling convenient energy monitoring and system management.
Downloads

📁 Downloads
📄 Alpha ESS Battery  📄Alpha ESS Manual DataSheet

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