Hoymiles and the all-in-one battery: what we heard and what is still to be confirmed

What did Hoymiles tell us about its all-in-one range?

Hoymiles' Australia sales director told us HiOne is built to be simple. The inverter and battery stack as one unit, and Hoymiles says it can be installed in as short as 15 minutes. He also described a roadmap of add-ons for the Australian market. Everything in this section is Hoymiles' own account, not our testing.

• The vision: Hoymiles says its motto is "Open Energy for All", and he described it as the company's long-term vision.
• In Australia: Hoymiles says it set up its Australian subsidiary in 2022, starting with microinverters.
• Support: he told us Hoymiles has local technical support and replaces faulty units under warranty. The Australian warranty terms say installation and commissioning costs are not covered.

He followed up in writing on 13 October 2026. We have paraphrased what we were told, and compared it with Hoymiles' documents where we could.

What is an all-in-one battery?

An all-in-one battery puts the inverter (the box that converts between solar, battery and home power) and the battery modules in one stack. Fewer separate boxes may mean a simpler install. The trade-off is that you choose the inverter and battery together, as one system.

What can we check about HiOne, and what is Hoymiles' own claim?

We checked HiOne against the Australian datasheet, the Clean Energy Council register and Hoymiles' Australian warranty terms. The modules are 8 kWh, up to 4 in a stack, rated IP66, with a 0 ms back-up switch time. Bigger numbers and extras come from Hoymiles itself, and we label them that way.

What we checked

• Approved: Solar Battery Perth's check of Clean Energy Council approval data on 14 October 2026 found 30 HiOne models, approved 13 August 2026 and listed until 31 December 2027. That means approved for installation in Australia.
• Modules: 8 kWh LFP modules, up to 4 per stack, with 2 stacks in parallel. You choose a size in 8 kWh steps at install.
• Approved sizes: from 7.8 kWh usable (one module) to 46.8 kWh usable (six modules).
• Rating: the inverter and the battery module are both IP66, and the datasheet lists multi-layer protection.
• Backup: The single-phase Australian datasheet lists a 0 ms back-up switch time; peak off-grid output needs the Hoymiles gateway, and the HiBox gateway is to be confirmed for Australia.

Hoymiles says

• Size: Hoymiles' materials list up to 64 kWh. The biggest build approved in Australia is 48 kWh (46.8 kWh usable).
• Life: more than 8,000 cycles, per Hoymiles' global preliminary datasheet. That is a figure from the cell maker, down to 70% of capacity, and it is not a warranty promise.
• Smarts: a built-in intelligent energy management system that optimises storage and use automatically, and a Dynamic Price Optimisation feature that charges when prices are low and discharges when they are high under dynamic tariffs. How much that helps depends on the tariff you are on.
• Install time: as short as 15 minutes.

How safe is HiOne?

The Australian datasheet rates the inverter and the battery module IP66, a rating for dust and water-jet protection, and lists multi-layer protection. Hoymiles says the battery also has six-layer protection and fire suppression in 4 seconds. That second claim comes from Hoymiles' website, not a datasheet or test report, so treat it as Hoymiles' word for now.

Hoymiles lists the six layers as a fire safety module, aerogel insulation pads, an insulation pad, temperature sensors, a pressure relief valve and terminal thermal sensors. We have not seen a test report for it. Ask Hoymiles or your installer for one.

What does the HiOne warranty cover?

Hoymiles' Australian warranty terms, dated 15 January 2026, give 10 years on the HiOne inverter and battery. The battery is promised to keep at least 70% of its designed capacity at 10 years, or until its throughput limit is reached. It needs a continuous internet connection, and without one the warranty may be void.

• Start date: the earlier of the install date and 4 months after Hoymiles ships it.
• Installer: a certified battery installer must fit it, and tell Hoymiles within 6 months of the invoice date.
• Extended warranty: Hoymiles' Australia sales director told us extended warranty options are planned; length and terms to be confirmed by Hoymiles.

Can I get the WA battery rebate with HiOne?

Not at the moment. HiOne is not on Synergy's supported list yet, so it is not currently eligible for the WA Battery Scheme rebate or Synergy's VPP (virtual power plant). The list we checked was dated 1 October 2026. To be confirmed: we'll update this page if that changes.

The scheme needs a battery on the Clean Energy Council list and a solution on Synergy's list, and joining Synergy's VPP is a condition of the rebate. No Hoymiles document we have read says whether it plans to apply for the list. For how the scheme works, see the WA battery rebate rules and our guide to Synergy's approved products.

What is Hoymiles bringing next?

Hoymiles has announced add-ons built to work with HiOne, and Hoymiles' Australia sales director gave us timing for two: the HiBox gateway in Q1 2027 and a V2X electric car charger by the end of Q4 2026. Those are Hoymiles' own dates, not confirmed Australian launches, so treat them as to be confirmed.

• HiBox gateway (on the horizon): Hoymiles describes it as a hub for whole-home backup that can add a second inverter and work with compatible generators and solar inverters. Q1 2027 for Australia, per Hoymiles' Australia sales director in his follow-up email of 13 October 2026.
• V2X charger (on the horizon): Hoymiles describes it as a 22 kW two-way electric car charger designed to pair with HiOne, for home backup and grid services. The end of Q4 2026 for Australia, per Hoymiles' Australia sales director in the same email. No Australian certification has been stated.
• HiSwitch (on the horizon): Hoymiles describes it as a five-in-one unit for the switchboard (transfer switch, circuit breaker, meter, bypass switch and a current sensor), designed to work with HiOne. Hoymiles launched it globally on 24 August 2026 and has stated no Australian date.
• Balcony solution (on the horizon): Hoymiles' Australia sales director says a balcony solution already sells in Germany, the UK, the US and Brazil, and is awaiting government approval in Australia and New Zealand. No date was given.
• A 16 kWh battery system (on the horizon): Hoymiles' Australia sales director says it is waiting on Clean Energy Council approval. No model name or date was given.

If these arrive as described, HiOne could grow from a home battery into a whole-home energy system, with backup, a generator hook-up and an electric car charger on one platform. That is the exciting part. The to-be-confirmed part matters just as much, so check dates with your installer before you plan around them.

Where can I buy and install HiOne in Perth?

That is still to be confirmed. HiOne is approved for installation in Australia, and Hoymiles said in a 24 August 2026 release that it is ready for installations across Australia. We have not seen a Perth supply date, price or installer list from Hoymiles. Ask any installer whether they can supply a HiOne and when.

Questions worth asking an installer:

• Which exact HiOne model code will you supply, and is it on the Clean Energy Council register?
• When can you supply it in Perth, and who handles a warranty claim?
• Will my home have the continuous internet connection the warranty needs?
• Which add-ons, if any, do I need for the backup I want, and are they available yet?

Use Solar Battery Perth's battery matcher to find the batteries that suit your home, then take your shortlist to installers.

Common questions about HiOne

Does HiOne work in a blackout?

The single-phase Australian datasheet lists a 0 ms back-up switch time, and backup is part of the design. Peak off-grid output needs the Hoymiles gateway, and the HiBox gateway is to be confirmed for Australia. Ask your installer what backup output your build gives and whether you need the gateway.

What sizes does HiOne come in?

HiOne is built from 8 kWh LFP modules, up to 4 per stack, and you choose a size in 8 kWh steps at install. Approved Australian builds run from 7.8 kWh to 46.8 kWh usable.

Does Hoymiles have local support in Australia?

Hoymiles' Australia sales director told us it does, with local technical support, and that it replaces faulty units under warranty. The Australian warranty terms name a local contact for claims and say installation and commissioning costs are not covered.

Sources

• Hoymiles, HiOne single-phase datasheet, Region: Australia REV1.1 (read 14 October 2026)
• Hoymiles, Warranty Terms and Conditions, All-in-One Product Series for Australia, 15 January 2026, warranty PDF
• Clean Energy Council, approved batteries list
• Synergy, Supported Solutions List, last updated 1 October 2026
• Hoymiles, HiOne product page (read 14 October 2026)
• Hoymiles, HiOne three-phase datasheet, Region: Global REV1.7 (Preliminary), global datasheet
• Hoymiles press release on the HiOne approval, 24 August 2026, published by pv magazine Australia: HiOne approved for Australia
• Hoymiles press releases: HiSwitch and HiBox, 24 August 2026; V2X charger, 7 September 2026
• Hoymiles Australia sales director, meeting on 12 October 2026 and follow-up email on 13 October 2026 (not published)