Sigenergy review

Sigenergy - Battery Reviews

4.9

Based on 845 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

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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 14 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 (10 kWh)
$7,368
Lithium-ion (Lithium Iron Phosphate)
10.4 kWh
5 kW
Yes
Yes
+ More details
SigenStor Single-Phase (13 kWh)
$7,600
Lithium-ion (Lithium Iron Phosphate)
13 kWh
5 kW
Yes
Yes
+ More details
SigenStor Single-Phase (16 kWh)
$7,700
Lithium-ion (Lithium Iron Phosphate)
15.6 kWh
5 kW
Yes
Yes
+ More details
SigenStor Three-Phase (10 kWh)
$8,800
Lithium-ion (Lithium Iron Phosphate)
10.4 kWh
5 kW
Yes
Yes
+ More details
SigenStor Three-Phase (13 kWh)
$9,000
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)
$10,000
Lithium-ion (Lithium Iron Phosphate)
15.6 kWh
5 kW
Yes
Yes
+ More details
SigenStor Three-Phase (24 kWh)
$12,300
Lithium-ion (Lithium Iron Phosphate)
23.4 kWh
5 kW
Yes
Yes
+ More details
SigenStor Single-Phase (32 kWh)
$14,400
Lithium-ion (Lithium Iron Phosphate)
31.2 kWh
10 kW
Yes
Yes
+ More details
SigenStor Three-Phase (32 kWh)
$15,200
Lithium-ion (Lithium Iron Phosphate)
31.2 kWh
10 kW
Yes
Yes
+ More details
SigenStor Three-Phase (40 kWh)
$18,000
Lithium-ion (Lithium Iron Phosphate)
39 kWh
10 kW
Yes
Yes
+ More details
SigenStor Three-Phase (48 kWh)
$20,900
Lithium-ion (Lithium Iron Phosphate)
46.8 kWh
10 kW
Yes
Yes
+ More details
SigenStor Single-Phase (40 kWh)
$17,000
Lithium-ion (Lithium Iron Phosphate)
39 kWh
10 kW
Yes
Yes
+ More details
SigenStor Single-Phase (48 kWh)
$19,900
Lithium-ion (Lithium Iron Phosphate)
46.8 kWh
10 kW
Yes
Yes
+ More details

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Sigenergy Reviews (845)

Show Most Relevant reviews from All time

  • 5 star 804
  • 4 star 37
  • 3 star 2
  • 2 star 1
  • 1 star 1

View Timeline

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

Installed By

Class A Energy Solutions SA Inner
Sigenergy is an excellent battery. Works flawlessly and reliably and the software for monitoring and taking action is well designed with reporting attached as well as AI capability. It also works well with my energy supplier and VPP capabilities.

Installed By

Think Renewable

Installed By

Infinity Electrical and Solar Pty Ltd

Installed By

Energy Buster

Installed By

Energy Solution Centre

Installed By

Adam Solar

Installed By

Adam Solar

Installed By

Positive Energy Solutions Pty Ltd

Installed By

Adam Solar

Installed By

LMS Electrical

Installed By

Local Energy Group

Installed By

Reef Solar and Electrical

Installed By

Discover Solar
It looks absolutely stunning and, so far, it is performing as well as it looks. I love the fact that the app shows me exactly what is happening at any moment of the day.

Installed By

Green Line Solar
Exceptionally good mySigen app. User friendly, giving instant picture of energy flow, packed with meaningful statistics, charts, graphs.

Installed By

MDB Solar SA
Should give us years of free power

Installed By

Geelong Coast Electrical Pty Ltd

Installed By

Stag Electrical Solar and Refrigeration ACT
They work

Installed By

Class A Energy Solutions SA Outer
Working extremely well. Would recommend Sigen for the capacity, 3 phase integration and backup.

Installed By

Clean Earth Solar

Installed By

Hardy Electrical and Solar Pty Ltd

Installed By

Goliath Solar and Electrical
So far is dealing with the heat well. Small whine from the fan can only be heard when in the garage.
Weirdly seems to drop off of wifi frequently on the first day of install or rather the connection between the app and the battery system does however this is more likely a software issue. Sigenergy just need to have both the phone and the battery report to the cloud and use event driven architecture.
Battery control is pretty great.

In this regard while the UI of the Enphase app is a bit dated, Enphase treat both their system and the phone apps as clients to the server in the cloud this allows the user to access the Enphase system from any device or multiple devices simultaneously. Also less bloat.

Installed By

OffGrid WA

Installed By

Uncommon Solar
Very Happy

Installed By

ECG Electrical Sunshine Coast
Quiet and compact

Installed By

Clayton Solar and Electrical Pty Ltd

Installed By

PSC Energy Newcastle
Sigenergy recalled the inverter supplied with our system. The changeover was facilitated by Uncommon Solar and caused no issues for us. We are currently experiencing what appears to be a programming issue that Uncommon Solar is looking into.

Installed By

Uncommon Solar

Installed By

Ultimate Solar Energy Melbourne

Installed By

Helcro Solar

Installed By

Degree C

Manufacturer Reply

Hi John thanks for the review

Are you able to share some information on what went wrong - we would love to learn how we can improve?

Regards, Will

Installed By

RenewCo Solar Sydney

Installed By

Solaworx

Installed By

Local Energy Group
Included supply and installation of a new Sigenergy 20kWh three-phase inverter.
Disconnection of existing single-phase inverters - 2 x 5kWh Goodwe inverters

Installed By

DQ Electrical

Installed By

Stag Electrical Solar and Refrigeration ACT

Installed By

Brightworks Solar
The battery has operated faultlessly to date but the standout aspect of this system as far as we are concerned is the app that you can use to monitor and control some aspects of it. User friendly to a fault and the flexibility you have in managing a whole range of functions is simply outstanding.

Installed By

G Solar and Electrical Pty Ltd

Installed By

RenewCo Solar Sydney
So far we have been very happy with the performance and reliability of the battery.

The Sigenergy app is easy to use.

Installed By

Brightworks Solar
Chose the Sigenergy battery because of its features, for the location and potential installation of an EV charger into the future.

Installed By

Uncommon Solar

Installed By

Green Solar Energy NSW

Installed By

Helcro Solar

Installed By

RenewCo Solar Sydney
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