If you’ve been quoted an iStore battery, or you already run one, there’s a change worth knowing about. iStore is moving its home battery from the current 5kWh module to a new 7kWh model, and the two don’t physically mix. This page explains what the iStore battery is, what the move to 7kWh entails, and where it sits compared to the batteries we fit in Perth homes.
- It's Huawei hardware under an Australian badge. The iStore battery is Huawei's LUNA2000, and the current 5kWh unit (IS-BATT-5000-ES) runs on that platform. The data side is different: iStore uses its own Univers monitoring app, not Huawei's FusionSolar.
- The new 7kWh model is expected around mid-2026 with a different physical design, so it can't be stacked with existing 5kWh modules. The 5kWh is also expected off the CEC product list around October 2026, and iStore hasn't published final 7kWh pricing or specs yet.
- Support is Australian-based, with a Western Australian team and service on both coasts. That local presence counts when you need a warranty claim handled.
- It's solid LFP hardware, just not our core range. For most Perth homes we get a better result on support, inverter pairing and parts from the batteries we install every week.
iStore is an Australian brand, but the home battery itself is Huawei. iStore distributes Huawei’s residential storage here, so the iStore battery and the Huawei LUNA2000 are the same hardware sold two ways. If you were comparing an “iStore battery” against a “Huawei LUNA2000,” you were comparing the same unit.
That’s not a knock. Huawei’s LUNA2000 is a well-regarded modular battery used widely overseas. It just means the badge on the box doesn’t tell you much that the platform underneath doesn’t already.
A fair question in 2026: who holds your system’s data, and where? This is one area where the iStore badge does change something. iStore doesn’t run on Huawei’s FusionSolar app. It uses its own monitoring platform, Univers (built on the EnOS energy operating system), which keeps your system’s monitoring separate from Huawei’s. The battery in the garage is the same hardware, but the software and the company holding your data are different. Where Univers stores that data isn’t something iStore spells out publicly, so if data residency matters to you, ask iStore to confirm the hosting location before you commit.
Two practical notes if you already own a Huawei system. If you add an iStore battery, you can usually choose to stay on FusionSolar or move across to the Univers app. And if you do switch, your historical FusionSolar data doesn’t carry over to Univers, so export anything you want to keep before the change.
The current iStore battery uses stackable 5kWh modules. The new model uses a 7kWh module with a different physical design, and you can’t combine the two sizes in the same stack.
So if you own a 5kWh iStore (or a Huawei system using those modules) and plan to add storage later, the clock matters. Once the market shifts to the 7kWh format, sourcing matching 5kWh modules to extend your existing stack gets harder. There’s also a compliance angle: the IS-BATT-5000-ES is expected to be removed from the CEC product list around October 2026. Existing installs stay valid, but adding more of the old module becomes more constrained as that date approaches.
If expansion is anywhere on your radar, even “sometime this year,” it’s worth confirming what your current platform can still take before the changeover lands. We’ve written a full walkthrough of that decision in our iStore 5kWh to 7kWh changeover guide.
The figures below come from the manufacturer platform. Treat them as the shape of the product rather than the final word, because iStore hasn’t released the badged 7kWh datasheet yet. Confirm the numbers against the official spec sheet at launch.
Feature | Detail |
|---|---|
Chemistry | Lithium iron phosphate (LFP), chosen for thermal stability and cycle life |
Module size | 5kWh today; new model moves to a 7kWh module (nominal) |
Design | Modular and stackable, so capacity scales in blocks |
Backup | Optional backup capability for essential circuits during an outage |
Warranty | 10-year warranty on the current iStore unit; Huawei’s newer S1 platform extends to longer terms. Confirm the badged figure at launch |
The modular approach is where it earns its keep. You add capacity in blocks rather than buying one large fixed unit, which suits a home that wants to start smaller and grow. The catch, again, is that the block you start with needs to match the block you finish with.
We don’t carry the iStore battery as a showcased product the way we do Tesla or Sigenergy. It’s capable hardware, and if it’s the system you want, usually to match an existing iStore or Huawei system, there’s a simplified way to get it.
In WA, the iStore battery x PSW is sold through Kleenheat Spark, the solar and battery platform Kleenheat runs for Perth households, with upfront pricing and rebates shown as you build a package. Perth Solar Warehouse is an appointed installation partner for Kleenheat Spark, so you get Kleenheat’s retail backing and the option to select our install team on the same job. If the iStore battery is the one you’re after, that’s the route we’d point you to. Start an enquiry through Kleenheat Spark, and the system matches, prices, and books it from there.
A quick note on rebates: the WA residential battery rebate and the federal battery discount can both bring the cost of storage down, but eligibility and amounts change, and they depend on the battery and installer being on the approved lists. Kleenheat Spark factors the current rebates into its pricing, and it’s worth checking the rules before you commit. Our WA battery rebate guide keeps the details up to date.
Is the iStore battery the same as a Huawei battery?
Yes. The iStore home battery is Huawei’s LUNA2000 hardware sold under the iStore brand in Australia.
Can I add the new 7kWh module to my existing 5kWh iStore battery?
No. The 7kWh model has a different physical design and can’t be stacked with the 5kWh modules. Expansion has to stay on one platform.
Should I wait for the 7kWh model or expand my 5kWh now?
It depends on your current setup and how soon you need the extra capacity. If you’re expanding an existing 5kWh system, doing so before the old module phases out is usually the lower-risk option. If you’re starting fresh, the newer platform may suit you better. We’ll check both against your system.
Do you install the iStore battery?
Yes, through Kleenheat Spark. We don’t showcase on our retail pages, but Perth Solar Warehouse is an appointed installation partner for Kleenheat Spark, our recommended WA platform where the iStore battery is sold through, so you can select our team to handle the install. If you already own a legacy iStore or Huawei system supplied from PSW, we can also advise on expansion and compatibility.
If Perth Solar Warehouse installed your iStore or Huawei inverter, contact us directly about adding storage. We can confirm what your current platform takes and plan the expansion before the 5kWh module phases out. For a new system, the iStore battery is sold through Kleenheat Spark, where our team does the install, so start your enquiry there. If you’d rather compare your options first, see our current retail solutions. Either way, a short check now saves a re-buy later.
