Added battery module options for the hugely popular (albeit recently troubled) Sigenergy SigenStor home battery storage system have been unveiled . Plus, we take a look at how the Sigenergy energy controller recall is progressing.
What’s New For The SigenStor Battery?
Previously, battery modules for the Sigenergy SigenStor battery system were available in 5 kWh and 8 kWh (BAT 5.0 and 8.0) capacities. Sigenergy APAC announced on Facebook late last week the addition of SigenStor BAT 6.0 and BAT 10.0 (5.84 kWh and 8.76 kWh useable capacity respectively) modules featuring:
- Battery chemistry: LiFePO4
- 314 Ah cell technology
- “Up to 10,000 cycles”
- Same physical dimensions as 5 kWh and 8 kWh modules (767W / 270H / 265D)
- Built in optimiser in each battery pack allowing for mixed use of all SigenStor BAT series.
- Maximum charge/discharge power – 5.0: 2.5 kW, 6.0: 3 kW, 8.0: 4 kW, 10.0: 4.6 kW.
- Peak charge/discharge power (10 seconds) – 5.0: 3.75 kW, 6.0: 4.5 kW, 8.0: 6 kW, 10.0: 6.9 kW.
Datasheets: BAT 6.0/10.0 | BAT 5.0/8.0
Added: A commenter has noted below that the BAT 6.0 and BAT 10.0 are yet to be added to the Clean Energy Council’s approved batteries list.
Warranty Mismatch?
Regarding the “up to 10,000 cycles” claim, at the time of writing Sigenergy’s warranty on the modules is 10 years. Sigenergy also guarantees the modules will retain either a minimum seventy percent of useable capacity for that period, or a Minimum Throughput Energy calculated from the start date; whichever comes first. The Minimum Throughput Energy for the modules is:
- BAT 5.0 (5.2 kWh useable capacity): 15.84 MWh.
- BAT 6.0 (5.84 kWh): 17.79 MWh
- BAT 8.0 (7.8 kWh): 23.77 MWh
- BAT 10.0 (8.76 kWh) 26.68 MWh.
Using the example of the BAT 10.0 – the useable capacity of which according to the datasheet is disproportionately lower than the BAT 8.0 for whatever reason — 26.68 MWh minimum throughput energy only comes to 3,046 cycles; far short of the “up to 10,000”. But the claim could still be considered an express warranty of sorts from Sigenergy; so worth keeping a record of.
According to the Australian Competition and Consumer Commission (ACCC), an express warranty comes into play when additional promises about a product’s quality or standard are made — verbally or in writing — such as what it can do and for how long.
“Consumers have a basic right that a manufacturer or supplier will comply with any express warranties they provide,” states the ACCC.
Installer Sweetener
Sigenergy has also recently launched an exclusive offer for Australian installers. The company will provide a $300 discount for each BAT 8.0 and $200 discount for each BAT 5.0 installed. This is valid for purchases made between 1 January – 30 April 2026. Credit notes will be issued per eligible installation.
Sigenergy Energy Controller Recall Update
In quite an upset for the company — and its customers — certain Sigenergy SigenStor battery systems began experiencing failures due to melted plugs and poor terminations some months ago.
After initial action from the firm, the ACCC coordinated with Sigenergy to publish a voluntary electrical safety recall on 19 November 2025 in relation to the company’s single phase 8/10/12 kW energy controllers1 featuring quick connect AC plugs requiring ferrules and crimping.
Affected AC plugs may overheat and become damaged, posing a risk of fire. While the Product Safety recall page indicated no property damage, injuries or deaths have been reported, we’re aware of at least one small fire that has occurred.
Remedial actions involved included a firmware update allowing Sigenergy to monitor each system and “proactively and temporarily” reduce the AC output if the product is operating at sustained full load. All affected batteries that were online at the time the recall kicked in had already received the firmware update, with those offline to have received it when next online.
SigenStor owners are receiving a free replacement energy controller that has an updated AC plug; with their retailer or Sigenergy Australia service partner arranging replacements. Sigenergy also committed to providing affected customers with an additional 2-year warranty on the product — so 12 years instead of 10.
Looking at a very long related Whirlpool forum discussion thread, there have been claims of continued issues during the recall period: from overheating to long waits on replacements, to the Sigenergy app only indicating a ten year warranty for replaced inverters and not the promised twelve years. We’ve also sighted reports elsewhere of various issues, including:
- A new inverter not functioning, and the installer heading off on Xmas break.
- Battery automation discharge function bugs.
- The dynamic export limit isn’t foolproof. There are still plugs being melted.
- Wi-fi issues.
- Communications issues relating to the Sigenergy End Users – Australia & NZ Facebook group (run by Sigenergy Australia staff), and just generally.
Any missteps and poor communications aside, recalls can be messy beasts at the best of times and the lead-up to the Xmas period is a particularly challenging time of year to get anything done. Here’s hoping for a speedy wrap-up for all those affected going forward.
Footnotes
- The energy controller incorporates a hybrid inverter, bidirectional DC EV charge control, Energy Management System (EMS) and Battery Management System (BMS). ↩
About Michael Bloch
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Is that a typo, or does their 10kWh modules really have less than 9kWh available? The two smaller sizes have much smaller “discounts” proportionally.
Nope that’s correct. Bit disappointing calling them 10kWh batteries IMO.
Might be a bit premature with the announcement there, they aren’t on the CEC listing of approved batteries yet
The 6.0 and 10.0 batteries were announced some time ago but the advice was they were unlikely to be CEC approved until some time on 2026.
I had a Sigenergy 40kw (5 x 8kw bat modules) install started on December 10th. The battery installer noticed very burnt and split mains cables on my AC connector, and couldn’t complete or certify the installation. As a result they couldn’t claim the rebate or connect the inverter back for safety reasons. Now I’m without a working inverter (plus 5 batteries) and ill be lumped with a bill when the rebates change in January – if I can even get a working replacement inverter in January. Not happy at all and Iprobably wont be on a position to purchase the EV DC charger I wanted to get in April.
If anyone is thinking of getting the batteries installed and have the single phase inverters that are affected, then swap the inverter first! Or else run the risk of facing larger than normal electricity bills.
I had a brand new solar and signergy battery installed end Nov25. The 4×8 kW batteries were installed but not the inverter as it was after the recall. The new inverter 10 kW showed up 1.5 weeks later on Dec10 and installed and commissioned.
Everything is running perfectly!
Well done Greenelec from Cromer .
Hi Steve,
Interesting that they are installing new units while recalled ones are still outstanding.
When did you sign up for yours?
Interesting to note the ‘Installer Sweetener’ discounts only apply to the older model BAT 5.0 & 8.0. Looks like an incentive designed to move old stock.
As it’s an ‘Installer Sweetener’ that the average punter won’t be aware of, I expect the cowboy companies will be ‘leveraging’ customers to accept quotes for the older models rather than the upgraded BAT 6.0 & 10.0. (The latter should really be designated BAT 9.0 to avoid confusion.)
Would you think that sigenergy might have systems in place should a variety of problems occurr to shorten and streamline warranty or faulty repairs
We had a Sigenergy 16 2Kw system installed 2 months ago. The installer was Eureka Solar and Battery (Ballarat based). Excellent service by Mitchell Pearson. No problems whatsoever . Lay off them, why don’t you?!!
hey champ, SQ is commenting about your installer.
The hardware with no RnD is the problem.
Bu tthat was expected.
You are one of the lucky ones. All the bestbfor 2026.
Why is it called the BAT 10.0 when it only has 9.04kWh total capacity? Seems very inconsistent with their other products which all have a total capacity matching the product name. Feel like this will just lead to confusion.
Wonder how a company like this gets products highly rated on here in the past. Look no further than “Installer Sweetener”.
You have to ask, why isn’t that just a price reduction on the listed price? There is only one answer to that and it does not involve the best interests of consumers.
feels like a marketing campaign by Sig to suppress the bad press.
A humble beginning for Sigenergy, they have been belted with 50% of the “big stick”. OK.
The majority of the “big gun providers such as ORIGIN, AGL etc. definitely need the other 50% fired at them. “Stick it up right up em” as the great Ted Whitten said.
WHY? Because our feed in/export for November was 974.5kWh, credit received $47.17
The current average usage rate we pay is .23c kWh (general & controlled load).
Our provider accepts 974.5kWh, then credits us with $47.17
We are assuming our provider then “on sells” our export at .23ckWh to other customers. 974.5kWh @.23c = $224.13
$224.13 sub $47.17 =$177.00
Therefore, being a customer of our provider, we have given them a credit of $177.00
Does all this make sense?
I guess we are all in the same boat without a stick or a “(paddle in a barbwire canoe)”, Sink Creek.
Hi Mark,
Time of use means I can park my car in the CBD for free at 9pm, however if I want to spend the *day* in town starting at 9am, the same parking space costs $30.
It’s the same for solar power, midday is the new off peak because the glut of energy means prices are zero.
https://www.solarquotes.com.au/blog/stealing-electricity/
This is great in theory except retailers are still charging shoulder rates through the day, which are no where near an off peak rate. This is particularly so in regional areas where rates are up to double those available in metro regions.
Yes, this is my beef too. Some have free hours, but a lot of plans seem way too high during the day.
Flipped Energy have 6c during the day here which seems more in line with supply and demand.
There is only one person in Australia who might get 23c value for your surplus solar power and that’s you. The rest of us would have to pay 15c to get it delivered and like you, a lot of us already have more than we can possibly use at lunchtime.
Your retailer almost certainly doesn’t want your electricity either because they’ll likely have to pay to have it disposed of on the spot market. Meanwhile some coal plant would have gladly paid your retailer to take their electricity rather than yours. Retailers complain to the regulator that our excess solar means they have to charge a higher rate to cover their hedging costs. It’s worse than worthless to them.
But help could be on the way real soon. Chris Bowen wants to create a market for our midday electricity – there’s a real chance it could actually become worth a cent or two to your retailer next year.
Hi Glen,
H’mmm lunchtime, yep a .15c pie delivered and like you a lot of us have more than we can possibly eat at lunchtime.
My retailer doesn’t want the excess tucker (To much pastry).
Meanwhile someone else would gladly eat my retailer’s leftovers, rather than mine. (What’s a piecost? .13c without sauce).
I won’t complain because I’m not hungry, the excesses we provide to others will help fill the saucers plate.
I have to say that I am still happy with my Sig (32kWh, 10kW inverter). Yes, the firmware updates throttles it back to as low as 6kW when exporting, and that does give me smaller bites of wholesale price spikes (on Amber), I could be maybe $120ish in credit for the month rather than $103. But I am still $103 in credit, real zero on carbon for home energy (net negative with some additional majority RE daytime imports sent back into majority fossil peaks) and appreciate the safety / abundance of caution.
My installer (Good Earth Group, top folks who have done most of our electrification journey) reckons it’s all fine and will be around with a replacement top box next month.
No complaints or worries here and it might be worth remembering that behind the handful of upsets, there are still thousands of customers doing just fine with their Sigs.
“The company will provide a $300 discount for each BAT 8.0 and $200 discount for each BAT 5.0 installed.”
This is a mistake right? Don’t they want people to get the new modules? Also how much more does the 10kwh one cost compared to the 8 kWh one?
ANY business will always try to clear old stock before promoting new. So old models will be discounted, promoted as ‘limited time only’ pricing (yeah, limited to as many as we have to purge from our inventory!) whilst the new kit will be priced at a premium.
My understanding from the UK-based YouBoob videos I’ve watched is that the new ’10’ kWh (really 9kWh) is the same price as the old 8kWh. Sounds like Sig. in the UK have already cleared all their old stock.
BAT-10 will get about $300 more rebate. They can’t have the new ones cheaper than the old ones, they’ll never get rid of the old stock.
I’ve been contacted by my installer and advised that the inverter replacement program currently underway is now being handled directly by Sigenergy, rather than by the installer as originally planned.
I was told this change is due to the large volume of replacements required and that Sigenergy will be taking over all coordination. However, my installer was unable to provide any contact details for Sigenergy or any indication of timeframes.
I’m now in a position where it’s unclear how to even make contact with Sigenergy, let alone obtain dates or a schedule for the replacement. With summer already here, my system is being throttled on sunny days, significantly reducing output, and there is currently no clear resolution or timeline in sight.
The worst part is that my installer already had a date for me, but now that’s been scrapped and I’m waiting to be contacted by I don’t know who or when. Anyone know how to actually get through/contact Sigenergy?
10,000 cycles is not on any local documentation I think that you will find