CBAK Energy Showcases Cylindrical Battery Solutions for Europe’s Expanding Energy Storage Market at The Battery Show Europe 2026

Rhea-AI Summary

CBAK Energy (NASDAQ: CBAT) showcased its cylindrical battery portfolio at The Battery Show Europe 2026 in Stuttgart, focusing on Europe’s portable and residential energy storage markets. Featured solutions included 26650 FS4, 26700 FB2, 40135 and 32140 LFP cells, sodium-ion options, and new high-power designs for AI data centers.

The company highlighted safety certifications, long cycle life, wide-temperature performance, and fast-charging capabilities aimed at compliant, durable, and efficient European storage systems.

News Market Reaction – CBAT

-3.47%

1 alert

-3.47% Session close to close

$64.12M Market Cap

0.0x Rel. Volume

In the Jun 12 session, CBAT declined 3.47%, reflecting a moderate negative market reaction.

Data tracked by StockTitan Argus on the day of publication.

Market Context

This announcement highlights CBAK Energy’s emphasis on safety-certified cylindrical cells, such as 2...

Analysis

This announcement highlights CBAK Energy’s emphasis on safety-certified cylindrical cells, such as 26650 FS4 and 40135, targeting European residential, portable, and emerging AI data center applications. Key technical points include the 40135’s 159 Wh/kg energy density, more than 4,000 cycles to 80% SOH, and low-temperature capability with over 40% capacity at -30°C. In context of recent history, investors may track how these product advances translate into margins, cash flow, and demand in Europe and AI-related markets.

Key Figures

40135 energy density: 159 Wh/kg 40135 cycle life: More than 4,000 cycles to 80% SOH Low-temp discharge: More than 40% available capacity at -30°C +5 more

8 metrics

40135 energy density 159 Wh/kg Company testing for 40135 cylindrical cell

40135 cycle life More than 4,000 cycles to 80% SOH 0.5C charge/discharge conditions per Company testing

Low-temp discharge More than 40% available capacity at -30°C 40135 cell discharge under specified test conditions

Fast charge rate 2C fast-charging capability 40135 cylindrical cell performance

Fast charge time Approximately 30-minute fast charging 40135 cell under specified test conditions

Temperature rise Below 20°C 40135 cell temperature rise during Company fast-charge testing

26650/26700 cells shipped Approximately 17.8 million units 2025 domestic cylindrical cell shipments (historical event)

32140 cells shipped 29.98 million units 2025 domestic cylindrical cell shipments (historical event)

Historical Context

5 past events · Latest: May 18 (Negative)

Pattern 5 events

Date	Event	Sentiment	24h Move	Catalyst
May 18	Q1 2026 earnings	Negative	-6.0%	Strong revenue growth but margin collapse and larger net loss.
May 15	Conference participation	Neutral	-0.5%	Announcement of presentation at Sidoti Micro-Cap Virtual Conference.
May 11	Trade fair participation	Neutral	-0.6%	Plan to showcase products at 18th China International Battery Fair.
Apr 13	Shipment rankings	Positive	-0.6%	Top-three domestic rankings and strong 2025 shipment volumes.
Mar 30	FY 2025 earnings	Negative	-2.9%	Revenue growth but sharp margin compression and swing to net loss.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Pattern Detected

Across the last five news and earnings events, CBAT shares moved lower after every announcement, including on strong revenue growth updates.

Recent Company History

Over the past six months, CBAK Energy has reported rapid revenue growth but persistent losses, including Q4 2025 revenues of $195.19M with a net loss of $9.38M and Q1 2026 revenues of $69.62M with a $9.29M net loss. Operationally, it added about 5.3 GWh of capacity and achieved top-three rankings in several cylindrical cell categories in China. Multiple conference and exhibition participations, including CIBF 2026, preceded modest share price declines, suggesting investors have been cautious despite operational milestones like shipment growth and technology rollouts.

Key Terms

ul 1642, iec 62133, ul 9540a, vent, +3 more

7 terms

ul 1642 regulatory

"CBAK Energy’s 26650 FS4 has obtained UL 1642, IEC 62133, and BIS certifications"

A standard for testing and certifying the safety of lithium battery cells, UL 1642 sets engineering and abuse-test requirements to reduce risks like fire, explosion or leakage; think of it as a crash test and safety checklist specifically for small lithium batteries. Investors care because UL 1642 certification affects whether batteries can be sold, shipped and insured, and it influences product liability, regulatory compliance and consumer trust—factors that can materially affect costs, sales and company valuation.

iec 62133 regulatory

"26650 FS4 has obtained UL 1642, IEC 62133, and BIS certifications"

IEC 62133 is an international safety standard for rechargeable batteries used in portable devices, prescribing tests and design requirements to prevent overheating, short circuits, leaks and fires. For investors, certification under this standard is like a safety inspection sticker: it helps products gain access to markets, lowers the risk of costly recalls or liability, and signals that a company’s batteries meet recognized safety expectations, which can affect sales, costs and reputation.

ul 9540a regulatory

"26700 FB2 has completed fire testing under UL 9540A, helping customers reduce compliance"

UL 9540A is a laboratory test method that simulates how energy storage batteries can fail, catch fire, and spread heat, gas, or flames to nearby cells or equipment. For investors, passing this test can reduce regulatory hurdles, insurance costs, and safety risk—think of it like a crash test for battery systems that shows whether a product is likely to contain a problem or cause a larger, costly incident.

vent technical

"the 40135 incorporates VENT and CID safety mechanisms, which are designed to provide"

A vent, short for ventilator or ventilation, is a medical device or process that helps a person breathe by moving air in and out of the lungs when they cannot do so effectively on their own. For investors, vents matter because demand, regulation, and reimbursement for these life-support tools can drive revenue and risk for companies that make, sell or service them; think of a vent as an engine that keeps a patient’s breathing system running when it’s failing.

cid technical

"the 40135 incorporates VENT and CID safety mechanisms, which are designed to provide"

A Civil Investigative Demand (CID) is a formal request from a government regulator that requires a company to turn over documents, respond to written questions, or give sworn testimony as part of a regulatory probe. For investors, a CID is a red flag because it can lead to fines, enforcement actions, or costly distractions; think of it like an official request to open a company’s filing cabinet that could reveal problems affecting its value.

lfp technical

"including the 26650 FS4 and 26700 FB2 multi-tab cells, the full-tab 40135 and 32140 series LFP cells"

LFP stands for lithium iron phosphate, a type of rechargeable battery chemistry used in electric vehicles and energy storage systems. It trades slightly less energy density for greater safety, longer cycle life and lower cost, so investors watch LFP adoption like choosing a durable, affordable tool instead of a high-performance but fragile one; changes in its use can affect battery makers, automakers and energy-storage economics.

ai data center technical

"26650 HP/PFS2 product for AI data center (“AIDC”) power supply scenarios"

An AI data center is a specialized facility that houses powerful computers, networking gear, and cooling systems designed specifically to run and store artificial intelligence workloads, like training large models and serving real-time AI applications. Investors care because these centers are capital-intensive infrastructure that enable companies to offer advanced AI services, drive recurring revenue, and create competitive advantages, much like a factory that determines how quickly and cheaply a business can produce its product.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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STUTTGART, Germany, June 12, 2026 (GLOBE NEWSWIRE) -- CBAK Energy Technology, Inc. (NASDAQ: CBAT) (“CBAK Energy”, or the “Company”), a leading lithium-ion battery manufacturer and electric energy solution provider in China, successfully concluded its participation at The Battery Show Europe 2026, held June 9–11 at Messe Stuttgart. At Hall 4, Booth E40, the Company showcased its cylindrical cell portfolio for portable and residential energy storage and high-power applications, including the 26650 FS4 and 26700 FB2 multi-tab cells, the full-tab 40135 and 32140 series LFP cells, sodium-ion solutions, and 26-series cells for tailored applications.

The CBAK Energy team celebrates a successful conclusion at The Battery Show Europe 2026.

Customer discussions at the exhibition underscored that Europe’s portable and residential energy storage markets are increasingly looking beyond capacity alone. As residential installations expand and portable power products require greater safety, longer service life, faster charging, and reliable outdoor performance, customers are placing greater emphasis on certified, durable, and efficient battery technologies. For European users, battery value is increasingly defined by three factors: safety and compliance readiness, long-term cycle-life performance, and consistent power across diverse operating conditions.

Addressing Safety Requirements and Compliance Readiness
In Europe’s residential and portable energy storage markets, safety is a critical factor for adoption. Battery systems are frequently deployed in homes, commercial facilities, and outdoor environments, where system integrators and end users require technologies that help mitigate safety risks while supporting strict certification and regulatory requirements. CBAK Energy’s 26650 FS4 has obtained UL 1642, IEC 62133, and BIS certifications, while the 26700 FB2 has completed fire testing under UL 9540A, helping customers reduce compliance uncertainty, streamline product qualification, and build confidence among installers and end users. For customers, this means a smoother path from battery selection to product validation, with fewer certification concerns during market entry. Meanwhile, the 40135 incorporates VENT and CID safety mechanisms, which are designed to provide pressure relief and current interruption under abnormal conditions, enhancing protection for high-power residential, commercial, and outdoor storage applications.

Supporting Long Service Life and Reducing Lifecycle Cost
Energy storage systems are long-term assets, and European residential and portable storage users prioritize batteries that can deliver reliable performance over many years while reducing replacement and maintenance needs. The 40135 cell combines 159 Wh/kg energy density with more than 4,000 cycles to 80% SOH under 0.5C charge/discharge conditions, according to Company testing. This enables storage systems with higher usable energy and extended lifecycle value. Its wide-temperature capability, including discharge performance at -30°C with more than 40% available capacity under specified test conditions, helps maintain dependable performance across seasonal and demanding European operating environments. Together, these features can help customers reduce premature capacity loss, lower replacement frequency, and improve the long-term economics of residential, commercial, and portable energy storage applications.

Product demonstration of CBAK Energy’s cylindrical cells at the booth.

Enhancing Power Flexibility and Performance Across Operating Conditions
As portable and residential energy storage applications expand, customers require cells that combine flexible pack design, stable high-load output, and reliable performance across varied environments. The 26650 FS4 small cylindrical cell’s compact design allows highly flexible pack configurations, enabling adaptation to space-constrained or customized products without costly redesigns. For higher-power storage systems, the 40135 cell uses a full-tab structure to substantially reduce internal resistance compared with traditional 26-series cylindrical cells, improving charge/discharge efficiency and limiting heat generation during high-current operation. With 2C fast-charging capability, an approximately 30-minute fast charging under specified conditions, temperature rise below 20°C under Company testing, and low-temperature discharge capability at -30°C with more than 40% available capacity, the 40135 supports faster system response, improved thermal control, and dependable performance in cold or high-demand environments. These advantages help customers build storage systems that recharge faster, operate more safely under high-current conditions, and deliver more reliable power when needed.

Preparing for Emerging AI Data Center Power Supply Requirements
CBAK Energy also introduced its upcoming second-generation 26650 HP/PFS2 product for AI data center (“AIDC”) power supply scenarios. As AI infrastructure drives higher requirements for stable, high-density, and fast-response power systems, data center operators increasingly need battery technologies that can support backup power, reduce downtime risk, and improve power reliability for critical digital infrastructure. The newest 26650 HP/PFS2 reflects CBAK Energy’s continued focus on high-power applications and is designed to help customers address the growing need for reliable, rapid-response power support in AI data center environments.

“The Battery Show Europe 2026 served as an important platform for us to engage with customers and partners across Europe’s energy storage value chain,” said Zhiguang Hu, Chief Executive Officer of CBAK Energy. “Capacity is now just the starting point. In the European market, true battery value is increasingly defined by high safety standards, compliance readiness, and sustained performance over long-term use. CBAK Energy’s commitment is to provide the critical cylindrical LFP battery technologies that help customers translate these market expectations into reliable, scalable, and commercially viable energy solutions.”

Following The Battery Show Europe 2026, CBAK Energy intends to continue advancing its cylindrical battery technologies across portable, residential, and emerging AI data center power applications. The Company is committed to providing safe, reliable, and scalable solutions that address evolving energy storage requirements and contribute to a more resilient and sustainable energy future.

About CBAK Energy
CBAK Energy Technology, Inc. (NASDAQ: CBAT) is a leading high-tech enterprise in China engaged in the development, manufacturing, and sales of new energy high power lithium-ion and sodium-ion batteries, as well as the production of raw materials for use in manufacturing high power lithium batteries. The applications of the Company’s products and solutions include electric vehicles, light electric vehicles, energy storage and other high-power applications. In January 2006, CBAK Energy became the first lithium battery manufacturer in China listed on the Nasdaq Stock Market. CBAK Energy has multiple operating subsidiaries in Dalian, Nanjing, Shaoxing and Shangqiu, as well as a large-scale R&D and production base in Dalian.

Forward-Looking Statements
This press release contains forward-looking statements within the meaning of the safe harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995. Statements that are not historical facts, including statements regarding the Company’s product performance, expected benefits of its battery solutions, new product development and commercialization, market opportunities, potential customer demand, business expansion, future collaborations, emerging applications, and growth opportunities, are forward-looking statements. These forward-looking statements are based on the Company’s current expectations and assumptions and are subject to risks and uncertainties that could cause actual results to differ materially from those expressed or implied. Actual results may differ as a result of various factors, including market adoption, customer demand, product performance in commercial use, certification and regulatory requirements, manufacturing and supply chain conditions, product development timelines, macroeconomic conditions, and other risks described in the Company’s filings with the U.S. Securities and Exchange Commission. The Company undertakes no obligation to update any forward-looking statements, except as required by applicable law.

For more information, please contact:
Email: marketing@cbak.com.cn
LinkedIn: https://www.linkedin.com/company/cbakenergy
X: https://x.com/CBAKEnergy
Stocktwits: https://stocktwits.com/CBAK_Official
Investor Relations
Email: ir@cbak.com.cn
Website: https://ir.cbak.com.cn/

Photos accompanying this announcement are available at:

https://www.globenewswire.com/NewsRoom/AttachmentNg/f9489605-4b29-4ba6-adaf-293ddfa1db63

https://www.globenewswire.com/NewsRoom/AttachmentNg/95a82c40-47e9-42ce-84fd-04a8f994fa78

FAQ

What did CBAK Energy (NASDAQ: CBAT) present at The Battery Show Europe 2026?

CBAK Energy presented its cylindrical battery portfolio for portable, residential, and high-power energy storage applications. According to CBAK Energy, showcased products included 26650 FS4, 26700 FB2, 40135 and 32140 LFP cells, sodium-ion solutions, and 26-series cells tailored for European market needs.

How do CBAK Energy’s 26650 FS4 and 26700 FB2 cells address European safety and certification needs?

CBAK Energy’s 26650 FS4 and 26700 FB2 cells target strict European safety and compliance requirements. According to CBAK Energy, 26650 FS4 holds UL 1642, IEC 62133, and BIS certifications, while 26700 FB2 has completed UL 9540A fire testing, helping customers streamline product qualification and reduce compliance uncertainty.

What performance characteristics does CBAK Energy’s 40135 LFP cell offer for energy storage systems?

The 40135 LFP cell is designed for long life, high power, and wide-temperature operation. According to CBAK Energy, it delivers 159 Wh/kg, over 4,000 cycles to 80% SOH at 0.5C, full-tab low-resistance design, 2C fast charging, and usable discharge capacity at -30°C.

How is CBAK Energy targeting Europe’s portable and residential energy storage markets with CBAT batteries?

CBAK Energy is targeting Europe’s storage markets with certified, durable cylindrical cells emphasizing safety, lifecycle, and temperature resilience. According to CBAK Energy, features such as long cycle life, wide-temperature performance, and high-load capability aim to support residential, commercial, and portable systems across diverse European operating conditions.

What role does CBAK Energy’s 26650 HP/PFS2 play in AI data center power applications?

The upcoming 26650 HP/PFS2 cell is designed for AI data center power supply needs. According to CBAK Energy, it targets stable, high-density, fast-response backup power to help operators support critical digital infrastructure, reduce downtime risk, and enhance power reliability in AI-driven data centers.

How do CBAK Energy’s cylindrical batteries support fast charging and thermal control?

CBAK Energy’s cylindrical batteries, especially the 40135 cell, are designed for 2C fast charging and improved thermal behavior. According to CBAK Energy, the 40135 offers approximately 30-minute fast charging under specified conditions with temperature rise below 20°C, supporting efficient, high-current operation and thermal management.