All-in-one single-phase design
A 5 kW hybrid inverter and stackable LFP battery modules in one integrated, IP66-rated package — simpler to install and tidier on the wall.
Solar Battery·ESY SUNHOME
ESY SUNHOME HM5 — Single-Phase All-in-One Home Battery
The ESY SUNHOME HM5 is a single-phase, all-in-one home energy storage system that integrates a 5 kW hybrid inverter with stackable LFP battery modules. It is built for everyday Australian homes that want to store rooftop solar and use it across the evening peak, with a clean, IP66-rated outdoor design.
The HM5 scales with 5.12 kWh battery modules, from a single module up to six, for a capacity from 5.12 kWh to 30.72 kWh — so you can size it to your home and expand later. It accepts up to 8 kW of solar input, making good use of a typical rooftop array.
This page explains what the HM5 is, who it suits, every key specification, what those numbers mean for your home, and the technical terms behind them, so you can decide with confidence before requesting a quote from Sunbridge Energy.
Why choose the ESY SUNHOME HM5 Home Battery
Scalable 5.12–30.72 kWh
Stack from one to six 5.12 kWh modules for a capacity between 5.12 kWh and 30.72 kWh, sized to your home and expandable later.
Up to 8 kW solar input
The HM5 accepts up to 8 kW of PV input, making the most of a typical Australian rooftop solar array.
95% depth of discharge
A 95% depth of discharge means almost all of the rated capacity is usable, so you get more energy from every module you buy.
LFP safety, IP66
Built with LFP (lithium iron phosphate) cells and a multi-layer safety design, rated IP66 for worry-free outdoor installation.
10-year warranty
Backed by a 10-year warranty guaranteeing at least 70% capacity retention, with a long ≥ 6,000-cycle rating.
Who the ESY SUNHOME HM5 Home Battery is for
Standard single-phase homes
Most Australian homes are on a single-phase supply. The HM5’s 5 kW inverter suits typical household loads and solar systems.
Solar self-consumption
Homes with rooftop solar that want to store daytime generation — up to 8 kW of PV input — and use it in the evening instead of exporting it cheaply.
Flexible, scalable capacity
Households that want to start with one or two modules and expand up to 30.72 kWh as their needs grow.
Outdoor installation
Homes that need a weatherproof, IP66-rated battery suitable for outdoor wall or ground mounting in Australian conditions.
Backup and resilience
Households that want backup capability during outages, with anti-islanding protection for safety.
Long-term value
Buyers who value a long cycle life (≥ 6,000 cycles) and a 10-year warranty with capacity retention.
Key specifications
Battery
- Chemistry
- LFP (LiFePO₄)
- Battery module
- 5.12 kWh each
- Depth of discharge (DoD)
- 95%
- Capacity range
- 5.12 – 30.72 kWh (1 – 6 modules)
- Cycle life
- ≥ 6,000 cycles (25 °C)
- Ingress protection
- IP66
Inverter & power
- Inverter type
- Single-phase hybrid (all-in-one)
- Rated output power
- 5 kW
- Max. PV input
- 8 kW
- Output frequency
- 50 / 60 Hz
- Anti-islanding protection
- Yes
Warranty
- Warranty
- 10 years
- Performance
- ≥ 70% capacity retention
Specifications are based on the ESY SUNHOME residential ESS datasheet. Exact figures depend on the chosen configuration; Sunbridge will confirm the right setup for your home.
What the numbers mean for your home
95% depth of discharge
Depth of discharge (DoD) is how much of the battery you can use. At 95% DoD, about 95% of each 5.12 kWh module is usable, while a small reserve helps protect long-term battery health.
Scalable 1–6 modules
You can buy the capacity you need now and add 5.12 kWh modules later, growing from 5.12 kWh to 30.72 kWh without replacing what you already own.
Up to 8 kW PV input
The HM5 can take a generous solar array for a single-phase home, capturing more energy across the day and charging the battery faster.
≥ 6,000 cycle life
One cycle is roughly one full charge and discharge — about a day of use. At 6,000+ cycles, the HM5 is built for well over a decade of daily cycling.
IP66 rating
Rated for full outdoor installation — dust-tight and protected against powerful water jets — so it can be mounted on an external wall.
Anti-islanding protection
A safety function that stops the system feeding the grid during an outage, protecting line workers while still allowing safe backup to your home.
A deeper look at the technology
A simple, scalable single-phase system
The HM5 brings a 5 kW hybrid inverter and stackable 5.12 kWh LFP battery modules into one all-in-one unit, designed for the single-phase supply in most Australian homes. Start with a single module and expand to six, for a capacity from 5.12 kWh to 30.72 kWh.
With up to 8 kW of solar input, it makes good use of a typical rooftop array, storing daytime generation for use across the evening peak.
Safety and outdoor durability
The HM5 uses LFP (lithium iron phosphate) chemistry — the most thermally stable mainstream lithium chemistry — with a multi-layer safety design and anti-islanding protection. Its IP66-rated enclosure is built for worry-free outdoor installation.
A long cycle life of ≥ 6,000 cycles and a 95% depth of discharge mean you get strong everyday usable capacity and a long service life.
A closer look
Key terms explained
Shopping for a home battery means wading through technical jargon. Here is what the most important terms on this page actually mean.
kW vs kWh
A kilowatt (kW) measures power — how much the system can deliver at any instant. A kilowatt-hour (kWh) measures energy — how much it can store or deliver over time. A 10 kW / 20 kWh system can push 10 kW and hold 20 kWh, roughly enough to run a 10 kW load for two hours.
LFP (LiFePO₄)
Lithium iron phosphate, a lithium battery chemistry prized for thermal stability, safety and long cycle life. It is the preferred chemistry for residential storage.
Hybrid inverter
A single inverter that manages solar panels, the battery and the grid together, rather than needing separate solar and battery inverters.
High-voltage (HV) battery
A battery built from many cells in series to reach a high system voltage (often 400–800 V). Higher voltage means lower current for the same power, which reduces losses and can improve efficiency.
Depth of Discharge (DoD)
How much of a battery’s capacity you can safely use. 95% DoD means 95% of the rated capacity is usable; 100% means all of it.
Usable vs nominal capacity
Nominal capacity is the battery’s total energy on paper; usable capacity is what you can actually draw after the DoD limit. Always compare batteries on usable kWh.
Cycle life
The number of full charge-and-discharge cycles a battery can perform while staying within its warranty performance. Roughly one cycle per day of normal use.
Round-trip efficiency
The share of energy you get back out of the battery compared with what you put in. Higher efficiency means less energy lost as heat during storage.
C-rate (1C)
How fast a battery charges or discharges relative to its capacity. 1C means it can charge or discharge its full capacity in about one hour.
MPPT
Maximum Power Point Tracking — circuitry that constantly tunes each solar string to extract the most power. More MPPTs let panels on different roof faces perform independently.
Three-phase vs single-phase
Single-phase supply has one active wire and suits most smaller homes; three-phase has three and suits larger or all-electric homes with heavier loads. The battery must match your supply type.
Unbalanced load
In a three-phase home, when the three phases draw different amounts of power. A system that supports unbalanced loads can back up appliances even when the phases are uneven.
Backup / anti-islanding
Backup power runs your home during a grid outage. Anti-islanding is the safety function that stops the system feeding the grid during an outage, protecting line workers.
VPP (Virtual Power Plant)
A network of home batteries an energy provider can call on at peak times. Joining a VPP can earn you payments or credits for sharing stored energy back to the grid.
IP rating (e.g. IP65)
An Ingress Protection rating. The first digit is dust protection (6 = dust-tight), the second is water protection. An IP65/IP66 unit can be installed outdoors.
Rebates, payback and savings
Home battery storage can be eligible for government rebates and incentives, which change over time and vary by state and household. A correctly sized HM5 system — paired with the right rebate — can meaningfully shorten your payback period.
Sunbridge handles rebate guidance as part of the quote process: we check current eligibility, factor available incentives into your system design, and show you the expected payback based on your actual usage. See our battery rebate guidance for more, and we will confirm what applies to your address when you request a quote.
Read our battery rebate guidance →
Installation and support by Sunbridge
Sunbridge designs every HM5 system around your home rather than selling a fixed package. We start by analysing your electricity bills and smart-meter usage data to understand how and when you use power, then size the battery and plan your expansion path to match.
Installation is carried out by accredited installers to Australian standards, including switchboard and backup configuration, commissioning and testing, and a full handover so you know how to use the ESY SUNHOME app. We also provide ongoing support and monitoring for the life of the system.
Warranty
The ESY SUNHOME HM5 is backed by a 10-year warranty. Over the warranty term, the battery is guaranteed to retain at least 70% of its original usable capacity, or until it reaches its guaranteed energy throughput per module, whichever comes first.
These are the manufacturer’s terms; your guarantees under the Australian Consumer Law apply in addition. Sunbridge confirms the current warranty terms for your configuration and registers the warranty on your behalf as part of the installation.
Frequently asked questions
How much capacity does the HM5 have?
The HM5 stacks from one to six 5.12 kWh battery modules, for a capacity from 5.12 kWh up to 30.72 kWh. You can start smaller and expand later.
Is the HM5 single-phase or three-phase?
The HM5 is a single-phase, 5 kW system, suited to most standard Australian homes. For three-phase homes, ESY SUNHOME’s HM20 is the three-phase option.
What is the depth of discharge?
The HM5 has a 95% depth of discharge, so about 95% of each 5.12 kWh module is usable.
How much solar can I connect?
Up to 8 kW of PV input, which makes good use of a typical single-phase rooftop solar array.
Can it be installed outdoors?
Yes. The HM5 is rated IP66 — dust-tight and protected against powerful water jets — so it is suitable for outdoor installation in Australian conditions.
What battery chemistry does it use?
LFP (lithium iron phosphate / LiFePO₄), the most thermally stable mainstream lithium chemistry, with a multi-layer safety design.
How long is the warranty?
A 10-year warranty guaranteeing at least 70% capacity retention, with a long ≥ 6,000-cycle rating. Australian Consumer Law guarantees also apply.
Interested in the ESY SUNHOME HM5 Home Battery?
Talk to Sunbridge Energy about design, installation and a quote tailored to your home.