Batteries
Alpha Smile G2 B5
Smart 5 kW Home Battery System for Everyday Energy Savings
About AlphaESS SMILE G2 B5
The AlphaESS SMILE-G2-B5 is a compact all-in-one home battery system designed for households wanting a simple and reliable way to store solar power and reduce energy bills. It combines a 5 kW inverter with the AlphaESS SMILE-BAT-5P battery module, giving homeowners an easy entry point into battery storage with the flexibility to expand over time.
With a 5.04 kWh battery module and scalable design, the SMILE-G2-B5 is ideal for homes looking to use more of their solar energy during the evening, improve energy independence, and prepare for future energy needs. It features safe LFP battery chemistry, backup capability, VPP readiness, and a slim, modern design that suits Australian homes.
Why choose the AlphaESS SMILE-G2-B5?
The SMILE-G2-B5 is built for homeowners who want a battery that is practical, expandable, and easy to live with. Its all-in-one design keeps installation simple, while the 5 kW inverter provides dependable performance for day-to-day household use.
Key benefits include:
5 kW inverter included
5.04 kWh battery module
Expandable up to 30.24 kWh
Safe and stable LiFePO4 battery chemistry
Backup power capability
VPP ready
Slim, space-saving design
Easy installation and maintenance
Built for growing energy needs
The AlphaESS SMILE-G2-B5 is a great option for households starting with battery storage but wanting room to grow. It uses the SMILE-BAT-5P battery module, with each module delivering 5.04 kWh nominal capacity and 4.79 kWh usable capacity. The system can be expanded with additional modules, allowing total storage of up to 30.24 kWh.
That means you can start with what suits your budget and energy usage now, then expand later if your needs change.
Reliable power for everyday homes
With a maximum charge and discharge power of 5,000 W, the SMILE-G2-B5 is designed to help power your home when solar production drops, such as at night or during peak tariff periods. It helps households store excess solar generated during the day and use it later, reducing reliance on the grid and improving the value of their solar system.
The included inverter supports backup functionality, helping keep essential circuits running during outages when configured accordingly.
Safe battery chemistry you can trust
The SMILE-G2-B5 uses Lithium Iron Phosphate (LiFePO4) battery chemistry, which is widely regarded as one of the safest and most stable battery technologies available for residential storage. It is designed for long-term performance, thermal stability, and dependable everyday operation.
With a cycle life of 6,000 cycles, the battery is built to deliver lasting value for homeowners investing in cleaner, smarter energy.
Designed for Australian conditions
The AlphaESS SMILE-G2-B5 has an IP65 rating, making it suitable for a range of installation environments while offering protection against dust and water ingress. Its compact dimensions and slimline appearance make it a practical choice for homes where space and presentation matter.
The system also includes:
- Ethernet / WiFi communication
- UPS backup support
- Operating temperature range from -10°C to 50°C
- Parallel expansion from 1 to 5 battery modules
Key specifications
System
| Category | Specifications |
|---|---|
| Model | AlphaESS SMILE-G2-B5 |
| Nominal output power | 5,000 W |
| Battery chemistry | LFP (LiFePO4) |
| IP protection | IP65 |
| System dimensions | 640 x 250 x 745 mm |
| System weight | 75 kg |
| Warranty | 5-year product warranty, 10-year performance warranty |
Inverter
| Category | Specifications |
|---|---|
| Inverter model | SMILE-G2-S5-INV / SMILE-G2-B5-INV |
| Type | Hybrid / AC |
| Max charging/discharging current | 100 A |
| Max charging/discharging power | 5,000 W |
| Rated voltage | 230 V |
| Rated frequency | 50 / 60 Hz |
| Backup | UPS |
| Communication | Ethernet / WiFi |
Battery module
| Category | Specifications |
|---|---|
| Battery module | SMILE-BAT-5P |
| Nominal capacity | 5.04 kWh |
| Usable capacity | 4.79 kWh |
| Depth of discharge | 95% |
| Nominal voltage | 48 V |
| Max charge/discharge current | 52.5 A |
| Cycle life | 6,000 |
| Expandable | 1 to 5 modules in parallel |
Who is this battery suited for?
The AlphaESS SMILE-G2-B5 is well suited to households that:
- want to store excess solar power for use at night
- are looking for a compact battery with a built-in 5 kW inverter
- want a system that can grow over time
- value reliable backup capability
- want a battery ready for modern energy programs like VPPs
Simple, smart energy storage
The AlphaESS SMILE-G2-B5 offers a smart balance of performance, safety, and flexibility. With its 5 kW inverter, expandable battery design, and proven AlphaESS technology, it is a strong option for homeowners looking to take greater control of their energy use.
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View detailsGet a FREE Alpha SMILE G2 B5 Quote today!
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