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Bulgaria-based AuroraCell has introduced a 9.744 kWh residential battery using sodium-ion chromium oxide (NCO) chemistry, designed for 48 V hybrid inverter systems. The company claims up to 20,000 cycles at 100% depth of discharge and offers a 20-year warranty, but independent verification and product pricing were not reported.
Bulgaria-based AuroraCell has introduced a 9.744 kWh residential battery using sodium-ion chromium oxide (NCO) chemistry, adding a 48 V storage option for homes with compatible hybrid inverters. The company says the battery can reach 20,000 cycles at 100% depth of discharge and comes with a 20-year warranty; those performance figures are manufacturer claims, and independent test results were not included in the report.
The product, named the AuroraCell 9.7 kWh – 48 V RESS Pack, is a standalone battery intended for use with 48 VDC hybrid inverters. Its listed specifications give it 9.744 kWh of rated energy, a nominal capacity of 210 amp-hours and a nominal voltage of 46.4 volts. The operating voltage range is 32 to 54.4 volts.
AuroraCell specifies standard and maximum charging rates of 0.5C, with a standard discharge rate of 0.5C. Maximum discharge current is listed as 150 amps between 0 C and 60 C. The stated discharge temperature range is -40 C to 60 C, while charging is permitted from 0 C to 60 C. The company says its cells can deliver 20,000 cycles at 100% depth of discharge at 25 C. The report does not give a cycle-life test protocol or an independent assessment of that figure.
The battery weighs 110.5 kilograms and measures 483 mm by 254 mm by 754 mm. It has an IP65 rating and supports parallel connections, which AuroraCell says allow systems to be expanded with additional units. The company lists compatibility with hybrid inverter platforms from Victron Energy, Deye, Solis, Growatt, Schneider Electric, SMA, Sungrow, Sofar Solar, Studer and Ingeteam, with other brands available on request.
Long-Life Claims for Home Storage
The announcement gives residential buyers and installers another chemistry option for stationary energy storage, particularly where a 48 V battery and modular expansion fit an existing system. AuroraCell presents NCO chemistry as a way to prioritize durability, temperature tolerance and thermal stability—features that can matter for batteries operating in varied climates or cycling frequently.
The stated 20,000-cycle life and 20-year warranty could be relevant to buyers comparing expected service life and replacement risk. However, those figures do not by themselves establish lifetime savings or performance in a real installation. The report provides no price, usable-energy specification, efficiency figure, warranty conditions or independent comparison with competing batteries. Those details will affect whether the product is practical for a particular home and how it compares on cost over its service life.
The listed weight and dimensions also matter for installation planning. At 110.5 kg, the pack is a substantial piece of equipment, and the manufacturer’s compatibility list does not replace checks of inverter configuration, system design and local installation requirements.
9.7 kWh sodium-ion residential battery
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What AuroraCell Says NCO Changes
The reported product uses sodium-ion cells, in which sodium ions carry charge, paired with a chromium oxide cathode. The source describes NCO as distinct from other sodium-ion chemistries and says AuroraCell designed it to improve cycle life, stability and operation across a broad temperature range. These are descriptions of the company’s technology and intended performance, not independently established findings in the report.
The report frames the chemistry as an effort to address trade-offs commonly associated with sodium-ion batteries, including lower energy density and temperature-related performance limits. For stationary storage, the company says it prioritizes longevity and thermal stability. AuroraCell also describes the design as “ultra-safe,” but the report supplies no supporting test results or detailed explanation for that characterization.
AuroraCell’s technical literature lists UL9540A, UN38.3, MSDS and CE among the product’s certifications. The report does not specify the scope or issuing bodies for each listing, so the names should not be read as a complete account of what was tested or approved. The announcement is focused on a single residential battery model rather than a broader product range or deployment program.
“20,000 cycles at 100% depth of discharge”
— AuroraCell
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Pricing, Testing and Warranty Terms
The report does not state the battery’s price, availability date, sales markets or order volumes. It is also unclear how much of the 9.744 kWh rated energy is usable in an installed system, or what round-trip efficiency the product achieves. These details are needed to assess system cost and performance alongside the headline capacity.
AuroraCell’s cycle-life, temperature and safety statements are reported as company specifications. The source does not provide independent validation, test methods, operating conditions beyond the stated cycle-life temperature, or results from field deployments. It also does not explain what the 20-year warranty covers, what capacity retention is guaranteed, or what limits apply.
The listed certifications are not accompanied by documentation describing their exact scope. Although the manufacturer names several compatible inverter brands, the report does not provide a full compatibility matrix, installation guidance or confirmation that every model from each brand works with the battery.
home energy storage battery 20 year warranty
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Commercial Details Still Pending
Further product information from AuroraCell would clarify pricing, availability and warranty conditions, as well as usable capacity, efficiency and certification scope. Prospective buyers and installers will also need model-specific inverter compatibility and installation documentation before planning a system.
The next useful evidence would be independent test results or operating data that can substantiate the claimed cycle life, temperature performance and safety characteristics. Until those details are published, the product’s announced specifications provide a basis for initial comparison, but not a complete assessment of its cost or performance in a home energy system.
modular home battery with parallel connection
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Key Questions
What is the AuroraCell battery’s rated capacity?
AuroraCell lists 9.744 kWh of rated energy, with a nominal capacity of 210 Ah and a nominal voltage of 46.4 V. The report does not state the usable capacity.
What does sodium-ion NCO mean?
The battery uses sodium ions to carry charge and a chromium oxide cathode. AuroraCell says this chemistry is intended to prioritize cycle life, stability and operation across a broad temperature range; those benefits are company claims in the source report.
How long is the battery expected to last?
AuroraCell claims 20,000 cycles at 100% depth of discharge at 25 C and offers a 20-year warranty. The report does not provide independent verification, warranty terms or a guaranteed capacity-retention figure.
Which inverters does the battery support?
The company lists hybrid inverter platforms from Victron Energy, Deye, Solis, Growatt, Schneider Electric, SMA, Sungrow, Sofar Solar, Studer and Ingeteam. AuroraCell says other brands can be supported on request, but model-level compatibility details were not provided.
Is the battery available to buy, and what does it cost?
The source report does not give a price, availability date or sales-market information. Those commercial details remain unreported.
Source: rss
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