We configure HS2 systems to shift your solar generation into the evening hours your household needs most, with AI automatically optimising around your tariff:

• elekeeper app provides real-time visibility of solar generation, battery state, home consumption and export — all in one dashboard on iOS or Android
• AI Saving mode automatically optimises charge and discharge cycles around Time-of-Use tariffs and dynamic pricing, with three configurable strategies: Maximised Revenue, Balanced Revenue and Self-Consumption Priority
• Modular battery design scales from a base unit up to 25.0 kWh by stacking additional BU2 battery modules — start where you need to and expand later
• 16A maximum PV input current supports high-output modern solar panels without requiring additional DC combiners, extracting more from the same roof space
• Two independent MPPTs allow panels facing different roof orientations (e.g. north and west) to be optimised separately, maximising daily generation

Your solar self-consumption increases, your evening bills reduce and your energy setup is visible and optimised from a single app. Explore how the HS2 pairs with residential solar panels.

The HS2's integrated inverter and battery provide whole-home backup that activates automatically when the grid drops:

• Under 10ms UPS switchover — fast enough that most household appliances, routers and essential equipment don't register a fault and don't reset
• Single-phase models from 3–6 kW (HS2-3K-S2 to HS2-6K-S2) with rated AC output of 3,000–6,000W, providing meaningful backup capacity for whole-home circuits
• Three-phase models from 5–10 kW (HS2-5K-T2 to HS2-10K-T2) for homes with three-phase power, with up to 22.5 kWh of usable storage across five battery modules
• AFCI (Arc Fault Circuit Interruption) integrated as standard, detecting dangerous DC-side arc faults before they can cause fire — a critical safety layer for family homes
• RSD (Rapid Shutdown) supported, allowing the system to be safely de-energised in an emergency or during maintenance, in line with Australian installer safety requirements

WWhen the grid goes down, your home keeps running. See our full home solar battery offering for how we design backup capability into every system.

The HS2 can be installed as an AC-coupled retrofit alongside an existing solar system, replacing your current inverter with the HS2 all-in-one unit or integrating via AC coupling where the existing inverter is to be retained.

This makes it a practical upgrade path for homeowners who installed solar 3–7 years ago, are past their original inverter warranty, and want to add storage and smarter monitoring without starting from scratch.

Off The Grid assesses your current setup during the quoting process and recommends the cleanest integration approach — whether that's a full HS2 replacement or an AC-side addition to what's already in place.

We size and configure SAJ CHS2 systems around your actual load data - so the discharge schedule targets the intervals that drive your highest costs:

• Discharges during peak demand windows to reduce the demand charges that typically represent the largest component of commercial electricity bills
• Over 95% round-trip efficiency and 90% depth of discharge mean the majority of stored capacity is available when you need it
• Pre-assembled 51kWh base configuration with modular B2 extensions for custom sizing - matched to your site's load profile rather than a standard package
• Pairs with 10-50kW three-phase hybrid inverters for sites with larger solar arrays or higher consumption requirements
• App-based monitoring with OTA firmware updates keeps the system current and gives facility managers remote visibility of performance

Your demand charges reduce on a schedule built around your actual site data, and the system stays up to date without requiring a service visit. See our full commercial solar battery offering.

SAJ CHS2's integrated inverter and under 10ms UPS switchover means your critical loads keep running before most equipment registers a fault:

• Automatic UPS switchover with under 10ms transfer time - no manual intervention, no gap in power to protected circuits
• Protects point-of-sale systems, servers, refrigeration, HVAC and lighting during grid faults or planned outages
• Off-grid mode available for extended outages or sites that need to operate independently of the grid for periods
• LFP chemistry provides stable, thermally safe operation suited to commercial plant rooms and outdoor installations
• IP65 enclosures and thermal management handle Australian commercial environments from coastal to inland high-temperature sites

When the grid fails, your protected circuits stay live and your business keeps operating - without the complexity or running costs of a diesel generator.

SAJ CHS2's DC-coupled design maximises how much of your solar generation is captured and stored before any losses occur:

• DC-coupled integration captures solar energy directly at the battery level, improving round-trip efficiency compared to AC-coupled retrofits
• Stores surplus daytime PV generation for use during evening operations or overnight processes rather than exporting at low feed-in rates
• Sized relative to your array output and daily consumption curve so generation and storage work as a matched system
• Suited to rooftop and commercial solar carport installations where storage is part of the broader energy infrastructure from the outset
• CEC-approved for rebate eligibility, improving the upfront economics of the combined solar-plus-storage investment

Your solar investment generates the same energy it always did - but now far more of it stays on your site, working for your bottom line. See how SAJ storage fits into a complete commercial solar system.

SAJ CHS2's modular design means the initial system size isn't a ceiling on your future storage capacity:

• Base 51kWh configuration extends with modular B2 battery additions to suit growing load requirements without replacing the core system
• Pre-assembled format minimises disruption during expansion - additional capacity is integrated without a full system teardown
• Suits offices, retail, hospitality, light industrial and refrigeration-heavy sites at a range of scales
• Our commercial electricians manage all switchboard works, grid connection compliance and commissioning at each stage of expansion
• 10-year warranty with defined performance guarantee covers the full expansion lifecycle

Your storage investment grows alongside your business - on a timeline that suits your operations and your capital budget.