Can I add the ESY SunHome to my existing solar system?

Yes. The HM5/6 series supports AC coupling, so it can be retrofitted to an existing solar system without replacing your current inverter. We assess compatibility at the time of your quote.

What does 5.12 kWh per module actually mean for my home?

A single 5.12 kWh module covers roughly 2–3 hours of typical evening household load. Most Sydney families opt for two or three modules (10–15 kWh) to shift a meaningful portion of their daily solar generation to the evening.

Will the ESY SunHome keep my power on during a blackout?

Yes — the HM5/6 includes a built-in back-up circuit. We configure which loads are backed up during installation. If whole-home backup is a priority, let us know and we'll design the system accordingly.

Is the ESY SunHome eligible for the federal battery rebate?

The ESY SunHome is an eligible battery under Australian rebate programs. Rebate availability and amounts change — call us on 1300 797 630 for the current position at the time of your enquiry.

How long does installation take?

A standard ESY SunHome installation takes one day. We handle all grid notification paperwork and commissioning, including setting up the monitoring app.

Impressive Electrical & Solar

ESY SunHome Battery

Modular storage,
serious backup.

The ESY SunHome range starts at 5.12kWh and expands up to 90kWh. Single and three-phase options, built-in hybrid inverter, LFP chemistry, and genuine blackout protection.

Get a Quote

HM5/6

5–6 kW · 5–30 kWh

HM20

20 kW · 20–90 kWh

About ESY SUNHOME

20 Years of Battery Engineering

Founded in 2004, ESY SUNHOME built its reputation supplying Battery Management Systems to Huawei, Samsung, Dell, and Toshiba — making them one of the top five BMS manufacturers in China. That same engineering rigour now sits inside their residential solar battery range.

Headquartered in Shenzhen with a 12,000 m² facility and 800 engineers, ESY has international offices in Germany, Italy, and Sydney — meaning local warranty support isn't an afterthought. The HM5/6 series, launched in 2023, is their flagship home energy storage product.

The HM5/6 Series — What Makes It Different

Most batteries lock you into a fixed capacity. The HM5/6 starts at one module and lets you add more as your usage — or budget — allows.

Modular by design

5.12 kWh modules stack up to 30.72 kWh — add capacity later without replacing the system.

Built-in hybrid inverter

The 5 kW or 6 kW inverter is integrated, so there's one less box on the wall and one point of warranty.

Retrofit-friendly

AC coupling means it works with most existing solar systems — no inverter replacement required.

Five-layer safety

Advanced BMS, system lock, secondary protection circuit, overcurrent fuse, and fire suppressant gel.

Key Specifications — HM5/6

Battery Capacity 5.12 kWh per module

Max Expandable Up to 30.72 kWh (6 modules)

Hybrid Inverter 5 kW or 6 kW built-in (single phase)

IP Rating IP66 (dust & water resistant)

Chemistry Lithium Iron Phosphate (LFP)

Blackout Protection Yes (back-up circuit included)

Monitoring ESY SUNHOME App (iOS & Android)

Warranty 10 years manufacturer warranty

What to Expect From Our Installation

Compatibility assessment first — We check your switchboard, existing inverter, and grid connection before quoting — no surprises on the day
Sized to your actual usage — We pull your consumption data and size the module count to match your evening load, not a generic recommendation
Blackout circuit wired correctly — Not all installers set up the back-up circuit — we ensure it's connected and tested before we leave
Licensed, insured, AS/NZS 5139 compliant — All battery work completed under Electrical Contractor Licence #306412C
Monitoring commissioned on site — We set up the ESY SUNHOME App on your phone so you can track performance from day one

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Honest advice · No pressure

ESY SunHome FAQs

Can I add the ESY SunHome to my existing solar system?: Yes. The HM5/6 series supports AC coupling, so it can be retrofitted to an existing solar system without replacing your current inverter. We assess compatibility at the time of your quote.
What does 5.12 kWh per module actually mean for my home?: A single 5.12 kWh module covers roughly 2–3 hours of typical evening household load. Most Sydney families opt for two or three modules (10–15 kWh) to shift a meaningful portion of their daily solar generation to the evening.
Will the ESY SunHome keep my power on during a blackout?: Yes — the HM5/6 includes a built-in back-up circuit. We configure which loads are backed up during installation. If whole-home backup is a priority, let us know and we'll design the system accordingly.
Is the ESY SunHome eligible for the federal battery rebate?: The ESY SunHome is an eligible battery under Australian rebate programs. Rebate availability and amounts change — call us on 1300 797 630 for the current position at the time of your enquiry.
How long does installation take?: A standard ESY SunHome installation takes one day. We handle all grid notification paperwork and commissioning, including setting up the monitoring app.