The most common battery sizing mistake is choosing a capacity based on what sounds reasonable rather than what your actual energy data shows. Sungrow’s residential lineup solves this with two distinct series, the SBR and the SBH, built for different household profiles and energy needs.
The Sungrow Residential Battery Lineup: SBR and SBH
Sungrow is the world’s largest inverter manufacturer by volume, and one of the battery brands Positive Energy Solutions installs most often.
The SBR (Scalable Battery Rack) is a modular rack-format battery for typical residential energy demand. It scales from 9.6 kWh to 25.6 kWh in 3.2 kWh modules (3 to 8 modules), flexible for homes wanting a modest starting capacity with the option to expand later.
The SBH is a wall-mounted battery for higher-demand households. It uses 5 kWh modules, starts at 15 kWh, and scales to 40 kWh per unit (3 to 8 modules): single-phase installations to a practical 30 kWh, three-phase installations to the full 40 kWh. Up to four SBH units can be run in parallel for a combined maximum of 160 kWh, a multi-stack figure for very high-demand properties, not the single-unit range above. It delivers higher discharge current (up to 50 A vs the SBR’s 30 A), suited to homes with large simultaneous loads such as ducted air conditioning, pool pumps, or EV chargers.
SBR vs SBH: Side-by-Side
The SBR Series: Common Configurations
- SBR96 (9.6 kWh): Suited to households with a 5 to 6.6 kW solar system and moderate daily consumption.
- SBR160 (16 kWh): The most popular configuration for Perth households. Suited to a 6.6 to 10 kW solar system and typical family energy use.
- SBR256 (25.6 kWh): Suited to large homes, 10 kW-plus solar systems, or households with higher demand from pool pumps, EV charging, or multiple air conditioning systems.
The modular design means you can start with a smaller set-up and add modules later without replacing the unit.
The SBH Series: When More Power Is the Priority
The SBH suits homes with genuinely high simultaneous loads, where the higher discharge current (50 A) means more power available at once:
- Homes with three-phase air conditioning or large ducted systems
- Properties with pool heating or high-draw pool pumps
- Households with EV charging alongside normal home loads
- Larger homes where 20 kWh or more of storage is needed from the outset
The Inverter Requirement
Both the SBR and SBH are DC-coupled batteries that need a compatible Sungrow hybrid inverter. For new solar-and-battery installations, this is not a problem. The Sungrow hybrid inverter and battery are typically specified together, and the combination is one of the most cost-effective packages on the Australian market.
For households adding battery storage to an existing solar system with a non-Sungrow inverter, a hybrid inverter will need to be added. Our team will assess your existing set-up and confirm whether this is practical.
For households with an existing Fronius inverter looking to add battery storage without a new hybrid inverter, the BYD Battery-Box HVM is compatible with Fronius equipment and does not require a new hybrid inverter. Read Is LFP Battery Chemistry Right for Perth Homes for a full breakdown of that option.
Why LFP Chemistry Matters for Perth
Both the SBR and SBH use lithium iron phosphate (LFP) chemistry. It is more thermally stable than NMC, warranted on a 10-year capacity-retention basis (70% at 10 years, or a per-model throughput cap, whichever comes first) rather than a fixed cycle count, and it delivers 97% round-trip efficiency. In Perth’s climate, where summer temperatures regularly go above 40 degrees, LFP’s thermal stability is a real, practical benefit.
For a detailed explanation of what LFP chemistry means for Perth homeowners, including the full thermal stability and cycle life comparison with NMC, read Is LFP Battery Chemistry Right for Perth Homes, which covers the chemistry in depth.
In performance terms, the Sungrow SBR delivers a round-trip efficiency of 97%, meaning 97 cents in every dollar of solar energy stored comes back out as usable power. This is among the highest efficiency ratings available in the Australian residential market.
Sungrow’s Australian warranty for the SBR is built around 10-year capacity retention (70%) or a per-model cumulative-throughput cap, rather than a manufacturer-published cycle count. For solar self-consumption and backup use, this supports many years of effectively unrestricted daily cycling within the warranty term.
Which Configuration Suits Your Home?
The right answer depends on your solar system size, your daily energy use, and your peak simultaneous load. Our team reviews your energy data before recommending a specific set-up. Oversizing wastes budget. Undersizing means the battery is consistently drained before the next solar cycle.
Pricing
On a per-kWh installed basis, the Sungrow SBR typically works out to approximately $160-$200 per usable kWh, one of the most competitive rates among quality LFP batteries in Australia.
Sungrow is on the Synergy Supported Solutions List, making installations eligible for the WA Residential Battery Scheme through the Battery Rewards VPP program. Combined with the federal Cheaper Home Batteries Program (tiered at approximately $258/kWh for the first 14 kWh of storage), the available rebates cut the net cost by a lot. Our team will confirm current rebate amounts when you Request Your Quote.
Why Choose Positive Energy Solutions for Your Sungrow Battery
Positive Energy Solutions designs and supplies Sungrow battery systems for Perth homes. Every system is sized to your energy data, installed by accredited installers to our completion standards, and backed by a 10-year installation workmanship warranty and Positive Energy Protection, powered by Omnidian. Visit our Osborne Park showroom or Request Your Quote.
Related guides
- Sungrow vs Tesla Powerwall 3 vs SigEnergy SigenStor: Which Battery Is Right for Your Perth Home in 2026?
- PES Is a Sungrow Platinum Partner in Perth: What That Means for Your Solar and Battery System
- Sungrow Solar Battery Backup Power for Perth Homes
- Best Solar Batteries for Perth Homes in 2026
Frequently Asked Questions
What is the difference between the Sungrow SBR and SBH?
The SBR is designed for small to medium storage, ranging from 9.6 kWh to 25.6 kWh across 3 to 8 modules. The SBH starts at 15 kWh and is expandable up to 40 kWh per unit (single-phase to a practical 30 kWh, three-phase to the full 40 kWh), with up to four units in parallel for a combined maximum of 160 kWh, suited to larger homes and higher power demands. Both use LFP chemistry and require a Sungrow hybrid inverter.
Is the Sungrow battery eligible for the WA rebate?
Yes. Sungrow is on the Synergy Supported Solutions List, making it eligible for the WA Residential Battery Scheme through the Battery Rewards VPP program. Combined with the federal Cheaper Home Batteries Program, the available rebates can substantially reduce the net cost. Our team will confirm current eligibility and amounts when you Request Your Quote.
Does the Sungrow battery work with any solar inverter?
No. The Sungrow SBR and SBH work only with Sungrow hybrid inverters. If your existing system uses a different inverter brand, you will need to switch to a Sungrow hybrid unit. Combined with WA rebate eligibility, this is often worth it financially.
How is the Sungrow battery warranted, by cycle count or by capacity?
By capacity, not cycle count. Sungrow’s Australian warranty covers the SBR and SBH for 10 years, guaranteeing at least 70% capacity retention (or a per-model cumulative-throughput cap, whichever comes first). There is no manufacturer-published cycle-count figure for the Australian market. For typical solar self-consumption and backup use, this structure supports effectively unrestricted daily cycling for the life of the warranty.
How efficient is the Sungrow battery?
The Sungrow SBR has a 97% round-trip efficiency rating. This means 97% of the solar energy charged into the battery is returned as usable electricity. Very little is lost in the charge-discharge process, which is among the best performance figures in the residential market.
About the Author
Jason Wiktorowicz
Sales Manager, Positive Energy Solutions | Perth, WA
Jason has been at the centre of Western Australia’s energy transition for over a decade. As Orchestration Lead on Project Symphony — WA’s largest virtual power plant pilot — and Stream Lead on Project Encore, he worked directly with AEMO, Western Power and Energy Policy WA to shape how distributed energy resources connect and operate on the SWIS. That work included developing and rolling out CSIP-AUS, now mandatory for all new WA grid connections. He also led Emergency Solar Management (ESM), the first program of its kind in WA, VPP for Schools (VPP4S), which provided direct market benefits through Supplementary Reserve Capacity, and REBAR, the WA Residential Battery Rebate scheme.
His earlier career spanned Synergy, Infinite Energy and Curtin University’s Sustainability Policy Institute, where he co-authored peer-reviewed research on net-zero urban precincts, solar integration and peer-to-peer energy trading, published in the journal Urban Planning in 2018.
At Positive Energy Solutions, Jason leads sales with a focus on system design accuracy and long-term performance. Positive Energy Solutions installs solar and battery systems, EV chargers and heat pumps, and holds partner accreditations with Fronius, SigEnergy, iStore and SunPower. Connect with him on LinkedIn.
