Batteries
AlphaESS Smile M5
Flexible, All-in-One Battery System for Smarter Energy Use
About AlphaESS SMILE-M5
The AlphaESS SMILE-M5 is a powerful and flexible home battery system designed for modern households looking to take control of their energy. With a 5 kW inverter and expandable battery capacity from 5 kWh up to 20 kWh, it's built to adapt to your home's energy needs — today and into the future.
Designed with a stackable, all-in-one structure, the SMILE-M5 simplifies installation while delivering reliable performance, advanced safety features, and seamless integration with your solar system.
Why choose the AlphaESS SMILE-M5?
The SMILE-M5 is designed for homeowners who want flexibility, safety, and performance in one system. Whether you're starting small or planning for a fully electrified home, this system grows with you.
Key benefits include:
5 kW hybrid inverter included
Expandable from 5 kWh to 20 kWh
All-in-one inverter + battery system
Stackable design for easy installation
100% depth of discharge
Ultra-quiet operation (<35 dB)
Built-in aerosol fire suppression system
Up to 200% peak overload capability
Supports high solar input (up to 10 kW PV)
Built to grow with your home
The SMILE-M5 offers flexible energy storage with a modular, stackable battery system. Starting from 5 kWh, you can expand up to 20 kWh, making it ideal for households that expect their energy usage to increase over time — whether through EVs, electrification, or growing families.
This flexibility allows you to start with what suits your budget now and upgrade later without replacing your system.
Powerful performance when you need it most
With a 5,000 W output, the SMILE-M5 is designed to support everyday household energy demands while also handling higher loads when needed. Its 200% peak overload capability ensures stable performance during sudden energy spikes, such as when multiple appliances are running at once.
The system also supports up to 10,000 W of solar input, helping you maximise the value of your solar system by capturing and storing more energy throughout the day.
Advanced safety built in
Safety is a core focus of the SMILE-M5. It uses Lithium Iron Phosphate (LiFePO4) battery chemistry, known for its stability and long lifespan.
On top of that, the system includes a built-in aerosol fire suppression system, adding an extra layer of protection for your home — something not commonly found in standard residential batteries.
Quiet, compact, and easy to install
The SMILE-M5 is designed with real homes in mind. Its stackable design reduces installation complexity, while its ultra-quiet operation (<35 dB) ensures it won't disrupt your living space.
With an IP65 rating, the system is also suitable for both indoor and outdoor installations, offering flexibility depending on your home layout.
Key specifications
System
| Category | Specifications |
|---|---|
| Model | AlphaESS SMILE-M5 |
| Nominal output power | 5,000 W |
| Battery capacity | 5 – 20 kWh |
| Battery chemistry | LFP (LiFePO4) |
| IP protection | IP65 |
| Warranty | 10 years |
Inverter
| Category | Specifications |
|---|---|
| Type | Hybrid inverter |
| Max PV input power | 10,000 W |
| Max PV input voltage | 550 V |
| MPPT | 2 trackers / 1 string per MPPT |
| MPPT voltage range | 100 – 550 V |
| Max charge/discharge power | 5,000 W |
| Rated voltage | 230 V |
| Phase | Single phase |
| Backup | UPS |
| Communication | Ethernet / WiFi |
Battery
| Category | Specifications |
|---|---|
| Battery module | SMILE-M-BAT-5P |
| Capacity per module | 5 kWh |
| Modules | 1 to 4 stackable |
| Operating temperature (Charge) | 0°C to 50°C |
| Operating temperature (Discharge) | -10°C to 50°C |
| IP rating | IP65 |
Who is this battery suited for?
The AlphaESS SMILE-M5 is ideal for households that:
- want a flexible, scalable battery system
- are planning to increase energy usage over time
- want a clean, stackable design
- value advanced safety features
- want to maximise solar usage and reduce grid reliance
Smart energy, simplified
The AlphaESS SMILE-M5 delivers a balance of performance, flexibility, and safety in a single system. Whether you're just starting your energy journey or building toward a fully electrified home, the M5 gives you the foundation to grow.
Other Alpha ESS Batteries
Alpha Smile 5 10.1
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Alpha Smile 5 13.3
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Alpha Smile T10 HV
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Alpha Smile B3 Plus
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Alpha Smile G3
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Alpha Smile G2 B5
View detailsGet a FREE Alpha SMILE-M5 Quote today!
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