Sigenergy review

Sigenergy - Battery Reviews

5.0

Based on 458 ratings

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:

  • 8 kWh battery
  • 5 kWh battery
  • 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.

The SigenStor battery is impressive. It's definitely worth considering and despite the newness, is SolarQuotes-recommended after closely examining the hardware and talking with the sparkies who are installing it.

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
  • 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, which are stackable to six units high (up to 48kWh capacity). 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

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.

Conclusion

We've been impressed by what we've seen and heard so far about the SigenStor and Sigenergy; and it's currently an SQ-recommended battery. If you have installed one, please leave a rating and review.

Sigenergy has 16 solar batteries in our database

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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 (8 kWh)
$5,000
7.8 kWh
4 kW
Yes
Yes
SigenStor Single-Phase (10 kWh)
$7,068
10.4 kWh
5 kW
Yes
Yes
SigenStor Single-Phase (13 kWh)
$7,210
13 kWh
5 kW
Yes
Yes
SigenStor Single-Phase (16 kWh)
$7,200
15.6 kWh
5 kW
Yes
Yes
SigenStor Three-Phase (8 kWh)
$7,500
7.8 kWh
4 kW
Yes
Yes
SigenStor Three-Phase (10 kWh)
$8,500
10.4 kWh
5 kW
Yes
Yes
SigenStor Three-Phase (13 kWh)
$8,700
13 kWh
5 kW
Yes
Yes
SigenStor Single-Phase (24 kWh)
$9,378
23.4 kWh
6 kW
Yes
Yes
SigenStor Three-Phase (16 kWh)
$9,500
15.6 kWh
5 kW
Yes
Yes
SigenStor Three-Phase (24 kWh)
$11,578
23.4 kWh
5 kW
Yes
Yes
SigenStor Single-Phase (32 kWh)
$13,200
31.2 kWh
10 kW
Yes
Yes
SigenStor Three-Phase (32 kWh)
$14,200
31.2 kWh
10 kW
Yes
Yes
SigenStor Three-Phase (40 kWh)
$16,800
39 kWh
10 kW
Yes
Yes
SigenStor Three-Phase (48 kWh)
$19,400
46.8 kWh
10 kW
Yes
Yes
SigenStor Single-Phase (40 kWh)
$15,800
39 kWh
10 kW
Yes
Yes
SigenStor Single-Phase (48 kWh)
$18,400
46.8 kWh
10 kW
Yes
Yes

 

Sigenergy Reviews (458)

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

Installed By

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

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

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

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

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!

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Battery works great and already saving me a fortune on electricity with amber electric.

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Full home backup works really well. Seamlessly flips to battery in blackout with no temporary outage experienced. The app allows dynamic battery control which is very useful.

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Great integration and ability to install the whole system outside the house is a bonus for us.
We mounted it on an east facing wall so it has minimal heat and weather exposure.

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An incentive was offered by Unified Solar Solutions for this review. Learn more here.

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Slick, small - l love the stackability. I original had a 13 kw battery installed and then realised I wanted to go bigger. So easy to have another 8kw module installed a week later!

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An incentive was offered by SAE Group Pty Ltd for this review. Learn more here.

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Very neat system.
I am confident the battery will meet my electrical needs for our household.

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The App that comes with the battery has excellent features allowing me to make optimum use of the solar panels.

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Great software

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Looks really neat, and I love the app!

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It's whisper quiet in my garage.

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8kw single-phase inverter is good. App interface is great. Perfect size (16kwh) for self-consumption and best ROI. Would have gone slightly larger (24kwh?) to increase available storage for re-sale on VPP, or if my heating was all electric. Would probably need a much larger battery (32kwh+?) to make wholesale pricing work for me, with an acceptable risk-level in the monthly bill. I'm happy that I didn't overspend on battery storage in order to chase diminishing future power re-sale returns.

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Battery had issues with one module being faulty and had to be replaced

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