New Sigenergy SigenStor Battery Options Emerge Amid Recall

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.
• Max. charge/discharge power – 6.0: 2.5 kW, 8.0: 4.6kW

Datasheets: BAT 6.0/10.0 | BAT 5.0/8.0

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, 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 for the new modules. 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.