Sigenergy review

Sigenergy - Battery Reviews

4.9

Based on 1151 ratings
Finn Peacock

Finn's Sigenergy Batteries Review & Verdict

Finn Peacock has been a Chartered Electrical Engineer since 1998, and is ex-CSIRO

Sigenergy's SigenStor battery is one of the more interesting systems to be unleashed on the home energy storage market.

It's a modular system where all the components (except the AC EV charger) are installed by dropping them onto the module stack, whether that's a:

  • 5 kWh or 8 kWh battery module
  • 1ph Solar Inverter
  • 3ph Solar Inverter
  • DC EV Charger

Whether you choose single or 3 phase, the whole thing will run happily off-grid, out of the box as long as you've sized it appropriately and have installed their Gateway.

While a new company, Sigenergy is headed by Tony Xu, who was with Huawei for 23 years – nearly 10 years of that as president of the Fusionsolar division.

Problems with some Sigenergy inverters identified by SolarQuotes in late 2025 led to a spate of melted plugs. The company blamed the overheating issue on installers, but launched a program to replace affected inverters with a redesigned product in an attempt to address the problem. 

Sigenergy Batteries: Pros & Cons

  • Sensibly priced
  • Modular, expandable
  • Single- and three-phase models available
  • Blackout protection
  • Grid connect or off-grid
  • Well supported
  • Very detailed monitoring
  • Issues reported relating to overheated terminals, melted plugs and burnt out wiring on some improperly installed single-phase inverter models.
  • Is not open about problems and responds negatively to criticism
  • Installation may be a bit fiddly in terms of fixings

About Sigenergy

Sigenergy is a newcomer to the solar energy storage market - and the company's flagship SigenStor battery is an intriguing solution.

Australian Office Contact Details

Address: Suite 02, Level 7, 191 Clarence Street, Sydney, NSW 2000
Tel. (Sales): 0400 108 934 
Tel. (Support): 0452 417 654 
Email (Sales): [email protected] 
Email (Support): [email protected]
Australian website

Company Info

Sigenergy was founded in early 2022 by ex-Huawei solar division president Tony Xu. While the firm has only been around for a couple of years, it boasts 600+ employees; 70% of who are R&D personnel.  The company has an 8,000 square metre facility in China housing its global headquarters and all those R&D folks.

Sigenergy's battery manufacturing plant is a 20,000 square metre factory located in the Lin-gang New Area in Shanghai, which has an annual production capacity of 6 GWh. In an effort to "green" its operations, Sigenergy has installed a 3,000 square metre (capacity not noted) solar system on the factory's rooftop.

SigenStor Solar Battery Highlights

Sigenergy introduced the SigenStor to the Australian market in 2023. The company claims the SigenStor is the first "five-in-one" energy storage system. It combines:

  • a PV hybrid inverter
  • battery pack
  • battery PCS (Power Conversion System)
  • Optional EV DC charger module - V2X "ready" (bidirectional charging)
  • EMS (Energy Management System)

The batteries are available as single-phase models in 5kW, 6kW, 8kW and 10kW AC ratings, with 2, 3 or 4 MPPT inputs. In three-phase, it's available in 5kW, 10kW, 15kW, and 25kW AC ratings, with 2, 3 or 4 MPPT solar inputs.

There are 5kWh and 8kWh battery packs available — and a couple more choices on the way — which are stackable to six units high. Additionally, further parallel capacity can be added.

The SigenStor offers blackout protection, with a very quick switchover time -  5-millisecond switching to backup mode. When grid power is restored, the system transitions back within 0 milliseconds. When installed as a battery hybrid (requiring a fee-based firmware upgrade), a gateway is available for full home backup.

On the EV charging front, it's capable for DC EV fast charging at 12.5kW or 25kW capacity. AC EV charging can be carried out at 7kW, 11kW (3-phase) or 22kW (3-phase) with dynamic control.

AI is also integrated into the SigenStor, which polls the battery every ten seconds. The app can be instructed using AI-powered chat. And just on the app, it offers very detailed monitoring - providing information as granular as individual cell voltages and temperatures.

As for VPP support, SigenStor has been integrated with several VPP platforms in Australia, with more to come.

The SigenStor has an IP66 rating; so it's suited to outdoor installation. It has an operating temperature range of -20°C to 55°C according to the datasheet and the warranty document confirms it can't be operated outside of -20°C to 55°C ambient temperature.

SigenStor Safety Features

---
Update: 13 November, 2025. Inverters in some single-phase SigenStor systems are experiencing overheated terminals, melted plugs and burnt out wiring. The company is aware and taking action. More information here.
---

In addition to using LFP (lithium-iron phosphate) battery cells - a very stable Li-ion chemistry - the SigenStor has five layers of protection:

  • Multiple advanced temperature sensors monitored by AI.
  • Internal fire suppression system - aerosol based, claimed to extinguish fires within 4 seconds.
  • Decompression valve.
  • Aerogel-insulated pads between cells to prevent spread of heat.
  • High-temperature-resistant insulation. 

The above really only scratches the surface - for a deep-dive into this battery, check out SQ's Anthony's post on SigenStor. You can also see estimated pricing and compare specs with other home energy storage solutions on SQ's solar battery comparison table.

Warranty Information 

The SigenStor has a 10-year product warranty on the battery and energy controller, 5 years on the gateway, and 2 years on the power sensor and communications modules. Sigenergy warrants that the battery system will retain either 70% of usable capacity at year 10 or for a minimum energy throughput of 15.85MWh for the 5kWh module or 23.77MWh for the 8kWh; whichever comes first.

Installer Approved

While the SigenStore battery is only new to the Australian market, or any market for that matter, it still managed to take 2nd place in the 2025 Installers' Choice Awards.  We asked installers, "If installing a system on your own house today, what brand's batteries would you use?"  and Sigenergy took 2nd place in a literal vote of confidence.

Sigenergy has 12 solar batteries in our database

Filter by:

Battery Type 
Usable Storage 
Power 
All-In-One unit 
Off-grid capable 
Product Name
Approx Price
Battery Type
Usable Storage Capacity
Power
All-In-One unit
Off-grid capable
SigenStor Single-Phase (13 kWh)
$6,300
Lithium-ion (Lithium Iron Phosphate)
13 kWh
5 kW
Yes
Yes
+ More details
SigenStor Single-Phase (16 kWh)
$6,800
Lithium-ion (Lithium Iron Phosphate)
15.6 kWh
5 kW
Yes
Yes
+ More details
SigenStor Three-Phase (13 kWh)
$8,000
Lithium-ion (Lithium Iron Phosphate)
13 kWh
5 kW
Yes
Yes
+ More details
SigenStor Single-Phase (24 kWh)
$10,000
Lithium-ion (Lithium Iron Phosphate)
23.4 kWh
6 kW
Yes
Yes
+ More details
SigenStor Three-Phase (16 kWh)
$8,600
Lithium-ion (Lithium Iron Phosphate)
15.6 kWh
5 kW
Yes
Yes
+ More details
SigenStor Three-Phase (24 kWh)
$11,900
Lithium-ion (Lithium Iron Phosphate)
23.4 kWh
5 kW
Yes
Yes
+ More details
SigenStor Single-Phase (32 kWh)
$13,700
Lithium-ion (Lithium Iron Phosphate)
31.2 kWh
10 kW
Yes
Yes
+ More details
SigenStor Three-Phase (32 kWh)
$15,500
Lithium-ion (Lithium Iron Phosphate)
31.2 kWh
10 kW
Yes
Yes
+ More details
SigenStor Three-Phase (40 kWh)
$19,600
Lithium-ion (Lithium Iron Phosphate)
39 kWh
10 kW
Yes
Yes
+ More details
SigenStor Three-Phase (48 kWh)
$24,000
Lithium-ion (Lithium Iron Phosphate)
46.8 kWh
10 kW
Yes
Yes
+ More details
SigenStor Single-Phase (40 kWh)
$17,800
Lithium-ion (Lithium Iron Phosphate)
39 kWh
10 kW
Yes
Yes
+ More details
SigenStor Single-Phase (48 kWh)
$22,000
Lithium-ion (Lithium Iron Phosphate)
46.8 kWh
10 kW
Yes
Yes
+ More details

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Sigenergy Reviews (1151)

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  • 5 star 1090
  • 4 star 53
  • 3 star 4
  • 2 star 2
  • 1 star 2

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Performing perfectly so far. They came pre-charged to 40%, which is a good thing because my new 3-phase meter had not yet been installed so I needed to be off-grid immediately. What a good test for the system! 16kWh was plenty of power for one night and all battery modules were fully charged to 40 kWh by midday on day one.

Installed By

NG Trade Solutions.
It does what I wanted, providing overnight power without needed to use the mains.
I considered upgrading to 24kWh but that is more than needed. However an important consideration in choosing Sigenergy is that the batteries are scaleable, meaning additional batteries can be added at any time. Not all brands can do that.

Installed By

GI Energy NSW & QLD
Initially we were going to go for a 5kw Enphase battery because we have Enphase micro-invertors on the old Q-Cells, but the cost did'nt stack up. We then set our sites on an 8kw Alpha-ESS, but were a little cautious about negative feedback around support issues. After speaking to the Sales person at Smart Energy Answers, he convinced us to go for the cutting-edge Sigenergy battery. Being modular, he suggested 2x8kw units for a total of 16kw. We couldn't be happier. It is a fantastic battery. The app is really great and the ongoing development of the app where Sigen ask customers for there input for new features is incredible. I'm only sorry now I didn't go for a 24kw system, just to tide over possible long rainy weeks in winter.

Installed By

Smart Energy Answers Central Coast O
The battery not only looks great but has been working very well keeping and backing up not just our home but also my Sons granny flat and a Tiny home that my in-law lives in, plus our pool. The app is simple and easy to use and shows you everything.

Installed By

Kennedys Plumbing and Electrical
A very neat and tidy unit, and great app so you can monitor the performance of the systems.

Installed By

JC Energy Sales Pty Ltd
Coupled with the Sig Energy Inverter/controller and Sigen software these batteries provide exceptional results in performance.

Installed By

Freedom Energy Solutions Group Pty Ltd
The system has a stack of four SigenStor 8.0 BAT batteries, providing 8kWh each for a total capacity of 32kWh. The stack of batteries with the energy controller on top looks great. It has an LED strip up one side and an LED ring on the energy controller which can be set through the app to display various lighting effects (with adjustable brightness) but by default they show whether the batteries are charging or discharging and the current battery state of charge (all the batteries in the stack charge and discharge at the same rate at the same time). I have turned these lights off, as I don’t feel the need for my battery stack to put on a light show.

Overall, I have been very happy with the battery performance and the stack has operated reliably and predictably so far with the app appearing to show very accurate information about the state of charge and the charging/discharging rate of the batteries.

I have taken one star off the rating because, while the battery units themselves have good ingress protection, there is a cable channel that runs down the side of the battery stack which is open and accessible from the rear of the stack (see photos where I have removed the side cover to show the wiring cavity). As I live in a rural area, I am concerned about the potential for rodents or snakes to be attracted to nesting in this space, which is warm and protected. Rodent damage to wiring could easily compromise the entire system. For this reason, I am investing in the installation of a rodent-proof enclosure around the battery stack. This creates an added cost for peace of mind and is a drawback of the SigenStor design in locations where there are a lot of rodents or other small pest animals.

Installed By

Seam Electrical Solar and Battery
Glad we went with the Sigenstor 48kWh battery stack. Plenty of power to last us for the next 10-15 years!! Very good value when you consider the $370/kWh rebate on offer at the time of purchase (August 2025).

Installed By

East Coast Energy Solutions Pty Ltd
The stackable units from an engineering perspective are really well thought out and look good. Additional variably sized batteries or a DC fast charger can easily and wirelessly be added into the stack at any time.

Installed By

Solar Pro Bendigo
The battery storage has been a game-changer for my energy usage. It allows me to store excess solar energy generated during the day and use it during peak hours or at night. The integration with the Sigenergy inverter is seamless, and the system intelligently manages when to charge, discharge, or export energy to the grid. This has significantly reduced my reliance on grid power and increased my energy independence.

Installed By

Solar4Life

An incentive was offered by PSW Energy Perth Solar Warehouse for this review. Learn more here.

Absolutely stoked with the 3x8kWh battery stack, it seems to be able to get me through the entire evening until it quickly gets recharged when the sun comes up. My grid imports have pretty much dropped to zero!

Installed By

PSW Energy Perth Solar Warehouse
The modular setup of the stackable ‘bricks’ sitting under the inverter (all in one stack) makes the whole system look clean and modern. We were recommended a smaller battery (less individual units) than what I elected to go with and in hindsight, the recommendation from Brightworks probably would have been sufficient for our use - we presently fill the battery early in the day and then don’t tend to dip too much below a 50% state of charge overnight/into morning before the battery swaps back from discharging to charging again. While we haven’t yet seen how the whole system performs during winter (and minimum solar-collection periods), we’re confident this battery will keep us off grid and maintaining multiple EV charges based on recent data.

Installed By

Brightworks Solar

Installed By

Green Line Solar

Installed By

Clean Earth Solar
Works perfectly in every aspect and then more!

Installed By

PBR Solar

Installed By

Winki Energy Melbourne

Installed By

Lenergy NSW

Installed By

Bayeco Electrical

Installed By

NG Trade Solutions.

Installed By

Peak Energy Group

Installed By

Level Electrical and Solar Arundel
Works great. Had a few power outages in the area but had no interrupts due to the battery switching quickly.

Installed By

Brightworks Solar

Installed By

RenewCo Solar Sydney

Installed By

Peak Energy Group

Installed By

Adapt Energy Gold Coast

Installed By

Hills Natural Solar

Installed By

PBR Solar

Installed By

Brightworks Solar
The battery and gateway are working great and exactly as advertised. The Sigenergy app is also very user-friendly and clearly displays all the information I need to monitor the system.

Installed By

Smarter Home Solutions
So far its been excellent

Installed By

Green Line Solar

Installed By

Freedom Electrical and Energy Solutions Pty Ltd
We had originally opted to go with a smaller system however we ended up with a 40kWhr battery system with 100% blackout backup. I am glad that we went with the larger battery system with the full blackout protection. Since we installed the system, we have only had to0purchase energy from the grid on 3 days (and less than 1 kWhr on each occassion ) due to 3 consecutive rainy days.

Installed By

DSW Energy Group - QLD

Installed By

Brightworks Solar

Installed By

Thoroughtec Pty Ltd
So far I really liked the sigenergy battery system app/software, which provides a lot of information and allows to customise many settings

Installed By

Positive Energy Solutions Pty Ltd

Installed By

Opera Solar
So far, the battery has been working well with no issues.

Installed By

Peak Energy Group

Installed By

Shaw Electrix

Installed By

Goliath Solar and Electrical
“It’s like a big rechargeable thing that steals sun power and saves it for later.”

Installed By

Adelaide SolarSafe

Installed By

Great White Solar and Electrical Pty Ltd

Installed By

Brightworks Solar

Installed By

Isolated Electrical Qld

Installed By

Ultimate Solar Energy Melbourne

Installed By

Positive Energy Solutions Pty Ltd
Functioning so well. Love how easily it integrates and how easy it is to use the app. Compact streamlined and neat.

Installed By

Mahoney and Da Silva Pty Ltd

Installed By

Class A Energy Solutions SA Inner
Smaller footprint than we initially thought. Great that it's modular and can add more. The app took a bit of learning but works very well

Installed By

Brightworks Solar
top is plastic, so might need protection from hailstorms if exposed to the west.

Installed By

Stag Electrical Solar and Refrigeration ACT

Installed By

SEA Solutions Australia
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