100% depth of discharge
SigenStor delivers a full 100% depth of discharge, so the rated capacity is the usable capacity — you use everything you pay for.
Solar Battery·Sigenergy
Sigenergy SigenStor — Modular All-in-One Energy System
The Sigenergy SigenStor is a premium, modular all-in-one energy system that brings together a PV inverter, battery, energy management and more in a single stackable unit. It is designed to be flexible: available in single-phase and three-phase, and scalable to suit everything from compact homes to large properties.
Built around highly reliable LFP cells, SigenStor offers a 100% depth of discharge and an industry-leading 10,000-cycle life. AC energy storage ranges from 5 kWh to 48 kWh with power output from 2.5 kW to 24 kW, so the system can be tailored precisely to your home and solar.
This page explains what SigenStor is, who it suits, every key specification, what those numbers mean for your home, and the technical terms behind them, so you can decide with confidence before requesting a quote from Sunbridge Energy.
Why choose the Sigenergy SigenStor
Industry-leading 10,000 cycles
Built around highly reliable LFP cells with industry-leading protections, the Sigen battery is rated for 10,000 life cycles.
Modular 5–48 kWh
AC energy storage scales from 5 kWh to 48 kWh, with battery modules you can stack to match your home and expand later.
Single- and three-phase
Available in both single-phase and three-phase, with power output from 2.5 kW to 24 kW to suit a wide range of homes.
All-in-one, modular design
A sleek, stackable unit that integrates the inverter, battery and energy management — and can extend to EV charging within the Sigenergy ecosystem.
10-year warranty
Backed by a 10-year warranty on the battery and inverter (and a 5-year warranty on the gateway).
Who the Sigenergy SigenStor is for
Single- or three-phase homes
SigenStor comes in both single-phase and three-phase versions, so it suits compact homes through to large all-electric three-phase properties.
Maximum usable storage
Households that want every kilowatt-hour they pay for — SigenStor offers a full 100% depth of discharge.
Long-term, future-proof investment
Buyers focused on lifespan who value an industry-leading 10,000-cycle LFP battery and a modular, upgradeable design.
High solar self-consumption
Homes with solar that want to store more daytime generation and minimise grid use across the evening peak.
EV-ready households
Homes wanting an integrated energy ecosystem — SigenStor can pair with Sigenergy’s EV DC charging for a unified system.
Premium, design-conscious buyers
Buyers who want a sleek, modular all-in-one unit that complements a variety of home styles.
Key specifications
Battery
- Chemistry
- LFP (LiFePO₄)
- Battery module options
- 5.38 / 8.06 kWh
- Depth of discharge (DoD)
- 100%
- Capacity range
- 5 – 48 kWh
- Cycle life
- 10,000 cycles
System & power
- System type
- Modular all-in-one (inverter + battery + EMS)
- Phase
- Single-phase or three-phase
- Power output
- 2.5 – 24 kW
- Module weight
- 78 kg per module
Warranty
- Battery & inverter warranty
- 10 years
- Gateway warranty
- 5 years
Specifications are based on Sigenergy’s published SigenStor product information for Australia. Exact figures depend on the chosen configuration and phase; Sunbridge will confirm the right setup for your home.
What the numbers mean for your home
100% depth of discharge
Depth of discharge (DoD) is how much of the battery you can use. At 100% DoD the rated capacity is the usable capacity — there is no reserve held back, so you get the most usable energy for what you pay.
10,000 cycle life
One cycle is roughly one full charge and discharge — about a day of use. At 10,000 cycles, the Sigen battery is built for decades of daily cycling, among the longest in the residential market.
Single- or three-phase, 2.5–24 kW
A wide power range and both phase options mean one product family can suit a compact single-phase home or a large three-phase property — matched precisely to your needs.
Modular 5–48 kWh
You can start with the capacity you need and add modules later, growing the system as your household, solar or EV needs change.
All-in-one ecosystem
Integrating the inverter, battery and energy management in one unit reduces clutter and points of failure, and lets the system extend to EV charging within the Sigenergy ecosystem.
A deeper look at the technology
A flexible, future-proof all-in-one
SigenStor is a modular all-in-one system that integrates a PV inverter, battery and energy management in a single stackable unit, available in both single-phase and three-phase. With power output from 2.5 kW to 24 kW and storage from 5 kWh to 48 kWh, one product family can suit a wide range of homes.
Its modular design means you can start with the capacity you need and expand later — and extend the system to EV DC charging within the Sigenergy ecosystem for a unified home energy setup.
Built for the long term
SigenStor is built around highly reliable LFP (lithium iron phosphate) cells with industry-leading protections, rated for 10,000 life cycles — among the longest in the residential market — and a full 100% depth of discharge, so the rated capacity is the usable capacity.
It is backed by a 10-year warranty on the battery and inverter, with a 5-year warranty on the gateway.
Key terms explained
Shopping for a home battery means wading through technical jargon. Here is what the most important terms on this page actually mean.
kW vs kWh
A kilowatt (kW) measures power — how much the system can deliver at any instant. A kilowatt-hour (kWh) measures energy — how much it can store or deliver over time. A 10 kW / 20 kWh system can push 10 kW and hold 20 kWh, roughly enough to run a 10 kW load for two hours.
LFP (LiFePO₄)
Lithium iron phosphate, a lithium battery chemistry prized for thermal stability, safety and long cycle life. It is the preferred chemistry for residential storage.
Hybrid inverter
A single inverter that manages solar panels, the battery and the grid together, rather than needing separate solar and battery inverters.
High-voltage (HV) battery
A battery built from many cells in series to reach a high system voltage (often 400–800 V). Higher voltage means lower current for the same power, which reduces losses and can improve efficiency.
Depth of Discharge (DoD)
How much of a battery’s capacity you can safely use. 95% DoD means 95% of the rated capacity is usable; 100% means all of it.
Usable vs nominal capacity
Nominal capacity is the battery’s total energy on paper; usable capacity is what you can actually draw after the DoD limit. Always compare batteries on usable kWh.
Cycle life
The number of full charge-and-discharge cycles a battery can perform while staying within its warranty performance. Roughly one cycle per day of normal use.
Round-trip efficiency
The share of energy you get back out of the battery compared with what you put in. Higher efficiency means less energy lost as heat during storage.
C-rate (1C)
How fast a battery charges or discharges relative to its capacity. 1C means it can charge or discharge its full capacity in about one hour.
MPPT
Maximum Power Point Tracking — circuitry that constantly tunes each solar string to extract the most power. More MPPTs let panels on different roof faces perform independently.
Three-phase vs single-phase
Single-phase supply has one active wire and suits most smaller homes; three-phase has three and suits larger or all-electric homes with heavier loads. The battery must match your supply type.
Unbalanced load
In a three-phase home, when the three phases draw different amounts of power. A system that supports unbalanced loads can back up appliances even when the phases are uneven.
Backup / anti-islanding
Backup power runs your home during a grid outage. Anti-islanding is the safety function that stops the system feeding the grid during an outage, protecting line workers.
VPP (Virtual Power Plant)
A network of home batteries an energy provider can call on at peak times. Joining a VPP can earn you payments or credits for sharing stored energy back to the grid.
IP rating (e.g. IP65)
An Ingress Protection rating. The first digit is dust protection (6 = dust-tight), the second is water protection. An IP65/IP66 unit can be installed outdoors.
Rebates, payback and savings
Home battery storage can be eligible for government rebates and incentives, which change over time and vary by state and household. A correctly sized SigenStor system — paired with the right rebate — can meaningfully shorten your payback period.
Sunbridge handles rebate guidance as part of the quote process: we check current eligibility, factor available incentives into your system design, and show you the expected payback based on your actual usage. See our battery rebate guidance for more, and we will confirm what applies to your address when you request a quote.
Read our battery rebate guidance →
Installation and support by Sunbridge
Sunbridge designs every SigenStor system around your home rather than selling a fixed package. We start by analysing your electricity bills and smart-meter usage data to understand how and when you use power, then size the inverter and battery — and plan any EV-charging integration — to match.
Installation is carried out by accredited installers to Australian standards, including switchboard and backup configuration, commissioning and testing, and a full handover so you know how to use the Sigenergy app. We also provide ongoing support and monitoring for the life of the system.
Warranty
The Sigenergy SigenStor is backed by a 10-year warranty on the battery and inverter, and a 5-year warranty on the gateway.
The Sigen battery uses highly reliable LFP cells rated for 10,000 life cycles, tested under 100% depth of discharge. These are the manufacturer’s terms; your guarantees under the Australian Consumer Law apply in addition. Sunbridge confirms the current warranty terms for your configuration and registers the warranty on your behalf as part of the installation.
Frequently asked questions
What is the depth of discharge of SigenStor?
SigenStor has a full 100% depth of discharge, so the rated capacity is the usable capacity — there is no reserve held back.
Is SigenStor single-phase or three-phase?
It is available in both single-phase and three-phase versions, with power output from 2.5 kW to 24 kW, so it suits everything from compact homes to large three-phase properties.
How much capacity can it hold?
AC energy storage ranges from 5 kWh to 48 kWh, using stackable battery modules (5.38 kWh and 8.06 kWh) you can expand over time.
How long is the battery rated to last?
The Sigen battery is rated for 10,000 life cycles — among the longest in the residential market — and is backed by a 10-year warranty.
What battery chemistry does it use?
Highly reliable LFP (lithium iron phosphate / LiFePO₄) cells with industry-leading protections.
Can it work with an EV charger?
Yes. SigenStor is part of the Sigenergy ecosystem and can integrate with Sigenergy’s EV DC charging for a unified home energy system. Sunbridge can advise on the full setup.
How long is the warranty?
A 10-year warranty on the battery and inverter, and a 5-year warranty on the gateway. Australian Consumer Law guarantees also apply.
Interested in the Sigenergy SigenStor?
Talk to Sunbridge Energy about design, installation and a quote tailored to your home.