iStore Battery
Review
Last updated: 9 July 2025
Table of Contents
- 1. Is This Australian Owned Brand a Smart Choice for Home Battery Storage?
- 2. Quick Pros & Cons
- 3. iStore Battery Evaluation: Performance, Experience & Support at a Glance
- 4. Who Should Consider the iStore Battery?
- 5. About iStore
- 6. iStore Battery Model Range
- 7. iStore Battery Specifications
- 8. Expanded Pros & Cons
- 9. Installation, Support & Warranty
- 10. Smart Monitoring
- 11. Ask Us Anything
- 12. Downloadable Documents
- 13. Final Verdict: Should You Buy an iStore Battery in 2025?
Is This Australian Owned Brand a Smart Choice for Home Battery Storage?
The iStore Smart Battery is a modular home energy storage system marketed under the iStore brand a name better known in Australia for its hot water systems and solar packages. While iStore is Australian-owned, the battery hardware itself is manufactured overseas and rebranded for local sale.
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This stackable lithium battery system is designed to pair exclusively with iStore hybrid inverters and comes in 5kWh modules that can scale from 5kWh up to 30kWh (or 60kWh in some setups). It promises full 100% depth of discharge, local warranty support, and an optional backup solution all wrapped in a slimline, IP66-rated housing.
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In this iStore battery review, we break down its performance, specifications, compatibility, and support so you can decide if it’s the right battery system for your home.
Quick Pros & Cons
Pros
- Modular and scalable from 5kWh to 30kWh (up to 60kWh in parallel)
- 100% depth of discharge for maximum usable capacity
- Compatible with single- and three-phase iStore inverters
- IP66-rated, quiet (<29 dB), wall or floor mountable
- Optional backup available with the iStore Backup Box
- Australian-owned brand with local warranty support
Cons
- OEM battery manufactured overseas and rebranded under iStore
- Locked into iStore inverter ecosystem no third-party compatibility
- Limited independent reviews or third-party performance testing
- Lower power output compared to premium alternatives
- Integrated energy optimizers improve lifecycle efficiency
iStore Battery Evaluation: Performance, Experience & Support at a Glance
Technical Performance
User Experience
Trust & Support
Overall Score
65%
78%
The iStore battery is a good option for homeowners already within the iStore or Huawei ecosystem who want modular storage, full usable capacity, and local support without paying premium brand prices.
Who Should Consider the iStore Battery?
The iStore Smart Battery is best suited for homeowners who are already using or planning to install an iStore solar inverter or a Huawei hybrid inverter. Because it’s not a universal battery system, its appeal is strongest within those ecosystems where full compatibility and monitoring integration can be guaranteed.
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It also suits households looking for a modular system that can scale over time, starting at 5kWh and expanding up to 30kWh (or 60kWh in some parallel setups). Thanks to its 100% depth of discharge and integrated energy optimizers, it offers full usable capacity, but still falls short in power output and third-party compatibility compared to other batteries in its class
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However, if you’re comparing across brands like BYD, Tesla or Enphase and want maximum power output, deeper smart features, or broader inverter compatibility, the iStore battery may not offer the flexibility or performance you’re looking for.
About iStore
iStore is an Australian-owned energy brand operated by Solargain, one of the country’s largest and longest-running solar companies. While the iStore name is most commonly associated with hot water heat pumps, the brand now also offers complete solar and battery packages including hybrid inverters and stackable lithium battery systems.
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The iStore Smart Battery is part of this push into whole-home energy management, designed to work primarily with iStore hybrid inverters and select Huawei hybrid inverters. While support, distribution, and warranty management are all handled locally through Solargain, the battery hardware itself is OEM-manufactured overseas and rebranded under the iStore name.
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This combination gives Australian homeowners the benefits of local support and warranty coverage, with the affordability of rebranded international hardware. iStore’s UNIVERS EMS monitoring platform also provides real-time performance data, adding to its usability as part of a connected solar and battery system.
iStore Battery Model Range
The iStore Smart Battery system uses a modular architecture based on 5kWh stackable lithium battery blocks. Each system includes a Power Module (IS-BATT-5000-BMS) and one or more Battery Modules (IS-BATT-5000-ES).
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Depending on the number of modules installed, iStore offers three core system sizes:
- 5kWh system (1 module)
- 10kWh system (2 modules)
- 15kWh system (3 modules maximum per stack)
For higher-capacity installations, two full stacks can be connected in parallel, allowing up to 30kWh per system or 60kWh in dual-stack configurations provided the inverter and site conditions support it.
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These batteries are only compatible with:
- iStore hybrid inverters (single- and three-phase models)
- Select Huawei hybrid inverters (confirmed for residential use)
All systems use LiFePOâ‚„ (LFP) cell chemistry, support 100% depth of discharge, and can be installed outdoors or indoors using a wall or floor-mount configuration.
iStore Battery Specifications
| Spec | Details |
|---|---|
| Usable Capacity | 5kWh, 10kWh, or 15kWh per stack (max 30–60kWh with parallel config) |
| Output Power (Continuous) | 2.5kW (1–2 modules), 5.0kW (3 modules) |
| Peak Output Power | 3.5kW (5kWh), 7.0kW (10–15kWh), for 10 seconds |
| Depth of Discharge (DoD) | 100% |
| Cell Chemistry | Lithium Iron Phosphate (LiFePOâ‚„ / LFP) |
| Weight per Battery Module | 50kg |
| Weight per System (3 modules + BMS) | Approx. 164kg (with stand) |
| Cooling & Noise | Passive convection, <29 dB |
| IP Rating | IP66 (suitable for outdoor use) |
| Communication Protocols | RS485 / CAN (parallel operation only) |
| Operating Temperature Range | −20°C to +55°C |
| Warranty | 10 years |
| Made In | China (OEM hardware) |
Expanded Pros & Cons
Pros
- Modular and Scalable Design
The iStore Smart Battery allows homeowners to start small and expand as needed, scaling from 5kWh to 30kWh per system and up to 60kWh with parallel stacks. This makes it suitable for both standard households and larger energy users.
- 100% Depth of Discharge
Unlike some batteries that only allow 90–95% usable capacity, the iStore battery gives you the full rated storage. This improves day-to-day savings and extends the value of the system over time.
- Local Warranty and Support
As a Solargain-owned brand, iStore offers local technical support and warranty handling within Australia a meaningful advantage over generic rebranded systems sold online.
- Safe and Weatherproof
Uses LFP (LiFePOâ‚„) chemistry, known for high thermal stability. IP66-rated for outdoor use, passively cooled, and includes 8 temperature sensors plus built-in fire suppression per module.
- Compatible with iStore and Huawei Inverters
While not universally compatible, it does support both iStore’s own inverters and selected Huawei hybrid models, making it viable for homeowners already using those platforms.
- Basic Smart Monitoring Included
The UNIVERS EMS platform allows for real-time tracking of battery performance, solar production, and consumption.
Cons
- OEM Product with Limited Transparency
The battery is not manufactured by iStore but rebranded from an overseas supplier. Detailed technical documentation and long-term testing data are limited compared to more established brands.
- Ecosystem Lock-In
The battery only works with iStore and some Huawei hybrid inverters. If you have a Fronius, Sungrow, or GoodWe system, this battery won’t be an option.
- Lower Output than Premium Systems
Max continuous power of 5kW (3-module setup) and 7kW peak output for 10 seconds. That’s lower than competitors like Enphase, BYD, or Tesla, which may deliver higher peak and sustained power.
- Limited App and Feature Set
While real-time monitoring is available, the UNIVERS EMS app lacks some of the advanced energy automation, grid-control, or VPP features found in more mature platforms.
- Lack of Third-Party Reviews
The iStore battery is relatively new to market and lacks independent reviews, long-term performance data, or large-scale VPP integrations.
Installation, Support & Warranty
Installation Requirements
The iStore battery system is designed for floor or wall mounting, with each 5kWh module weighing approximately 50kg. A three-module (15kWh) system, including the power module and base, weighs over 160kg, so professional installation is required. Due to the unit’s size and weight, most systems require two installers for safe handling.
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The system supports both single- and three-phase setups, and is best paired with:
- iStore Hybrid Inverters (1P or 3P models)
- Select Huawei Hybrid Inverters (typically SUN2000 L1 and M1 series)
To enable backup functionality, the iStore Backup Box must be installed to power essential loads during grid outages.
Warranty & Support
- Battery Warranty: 10 years or 6,000 cycles (whichever comes first), under standard use conditions
- Support Provider: Solargain (iStore’s parent company) manages warranty claims and tech support in Australia
- Conditions: The system must be installed by an authorised installer and in accordance with iStore’s installation manual
iStore’s warranty is competitive for its class, and local support through Solargain gives homeowners confidence that help is available if issues arise.
Smart Monitoring
Every iStore battery system includes access to the UNIVERS EMS monitoring portal, which allows homeowners to view:
- Solar production and battery charging
- Household consumption
- Grid imports and exports
- Battery state of charge (SoC)
The platform is accessible via desktop and mobile, but functionality is basic compared to platforms like Tesla, Enphase, or SolarEdge. It provides visibility, but not automation or advanced energy controls.
We Have Great Answers
Ask Us Anything
Pricing varies depending on the number of modules and inverter pairing. As a guide:
- iStore 5kWh battery price in Australia: Approx. $6500–$8,000 installed
- iStore 10kWh battery price: $8,000–$10,000 installed
- iStore 15kWh system: $11,000–$12,500 installed
Prices can vary based on location, installer margin, and rebate eligibility.
Yes. iStore is based in Perth and supported by Solargain, which has a strong installation and service network across Western Australia. If you’re in Perth, the iStore battery is readily available for both new installs and battery upgrades.
Only if you already have a compatible iStore or Huawei hybrid inverter. The iStore Smart Battery is not compatible with most third-party inverters like Fronius, Sungrow, or SMA.
Yes, but only with the addition of the iStore Backup Box. This allows the battery to power selected essential loads during grid outages. Whole-home backup may require further system design.
The batteries are manufactured in China and rebranded under the iStore name. iStore is owned by Solargain, which handles Australian support and warranty claims.
Each 5kWh battery module weighs 50kg and measures 670mm (W) x 150mm (D) x 360mm (H). The power module adds another 12kg. A 15kWh system weighs approx. 164kg including base.
Installation must be completed by a qualified electrician or solar installer using the iStore Battery Installation Manual. Floor standing kits are standard, with wall-mounting also available.
Yes. iStore’s UNIVERS EMS app provides real-time data on solar generation, battery charge/discharge, consumption, and grid usage. It’s available via desktop or mobile.
There is no official iStore pre-owned battery program. If buying second-hand, ask the installer to verify pre-owned battery health, cycle count, and remaining warranty before purchase.
Depending on your location, you may be eligible for the Federal Battery Rebate ($372/kWh) or state incentives such as those in WA, NT, or ACT (historically). Check your eligibility before purchase.
Downloadable Documents
Looking for technical specs, manuals, or installation details? Here are the most relevant downloads for the iStore Smart Battery:
Final Verdict: Should You Buy an iStore Battery in 2025?
The iStore battery delivers modular capacity and local support but does not meet our minimum scoring threshold for recommendation.
The iStore Smart Battery is a modular, stackable home storage system best suited for Australian homeowners who are already within the iStore or Huawei ecosystem. It delivers full 100% depth of discharge, decent scalability up to 60kWh, and local warranty support through Solargain all in a compact, IP66-rated form.
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That said, it’s not a universal battery. With compatibility limited to specific inverters and slightly lower power output than many premium options, the iStore battery is more of a mid-range choice than a market leader. The monitoring platform is basic, and the OEM manufacturing origin limits transparency.
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For homeowners prioritizing local support, modular sizing, and affordability within the iStore ecosystem, it’s a reasonable and practical solution especially if paired with rebates.
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If you’re already locked into the iStore or Huawei ecosystem and understand its limitations, it may serve as a practical entry point but stronger alternatives exist for most Australian homes.
Overall Score: 65%
If you’re already using an iStore or Huawei inverter and want a simple, scalable battery backed by Australian support, the iStore battery is may suit specific homeowners already within the iStore ecosystem, but has clear limitations compared to higher-rated systems.
Note: The iStore battery scores below our 70% recommendation threshold. While it may suit certain households, we do not consider it a recommended system for most Australian homes.
