CBAK Energy pitches LFP cylindrical cells to European storage market
CBAK Energy Technology (NASDAQ: CBAT) has wrapped up its appearance at The Battery Show Europe 2026 in Stuttgart, where the Chinese lithium-ion battery manufacturer exhibited its cylindrical cell portfolio across portable, residential and high-power storage categories. The Dalian-headquartered company occupied Booth E40 in Hall 4 at Messe Stuttgart during the three-day event, which ran 9 to 11 June.
The exhibit centred on several product lines: the 26650 FS4 and 26700 FB2 multi-tab cells, the full-tab 40135 and 32140 LFP series, sodium-ion solutions, and a second-generation 26650 HP/PFS2 cell positioned for AI data centre uninterruptible power supply applications. The latter marks a deliberate pivot by the company toward the backup-power requirements of AI infrastructure operators, a segment that CBAK says demands high-density, fast-response battery systems.
Product specifications and compliance positioning
The technical claims in CBAK's release are relatively specific by trade-show announcement standards. The 40135 cell is cited at 159 Wh/kg energy density with more than 4,000 cycles to 80% state of health under 0.5C charge/discharge conditions, based on the company's own testing. The cell also supports 2C fast-charging with an approximately 30-minute charge time and a temperature rise below 20°C under specified conditions, and the company says it retains more than 40% available capacity at minus 30°C discharge. These figures are based on internal test data and have not been independently verified.
Certifications are a central part of CBAK's European pitch. The 26650 FS4 carries UL 1642, IEC 62133 and BIS certifications, while the 26700 FB2 has completed fire testing under UL 9540A, a standard increasingly required by European residential storage installers and commercial building code authorities. The 40135 incorporates pressure-relief and current-interruption safety mechanisms.
Chief executive Zhiguang Hu said the company views safety and compliance readiness as competitive differentiators in the European market. "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," Hu said.
Market context and competitive landscape
European battery storage demand is rising sharply, driven by residential solar-plus-storage uptake, commercial peak-shaving and grid-balancing services. The residential storage segment is contested ground for Asian cell manufacturers, with CATL, BYD, and a range of South Korean suppliers already holding significant European customer relationships. Regulatory tailwinds in the form of the EU Battery Regulation, which entered into force in 2023 and phases in requirements around carbon footprint declarations, recycled-content thresholds and digital battery passports through 2030, are raising the compliance bar for all market entrants.
For a smaller NASDAQ-listed Chinese manufacturer like CBAK, certification credibility and product differentiation around cycle life and thermal performance are the primary levers for competing against better-capitalised peers. The AI data centre power supply angle is a newer addition to CBAK's European narrative; the hyperscale build-out across Western Europe is creating genuine incremental demand for high-reliability battery backup, though this market has historically been dominated by VRLA and large-format prismatic lithium cells rather than cylindrical formats.
CBAK did not disclose any European customer wins, signed supply agreements, revenue targets or distribution partners at the show. The forward-looking statements in the release are covered by US Private Securities Litigation Reform Act safe-harbour language, and the company notes that actual commercial outcomes may differ materially from the product performance and market opportunity characterisations contained in the announcement.
The company says it will continue developing its cylindrical portfolio for portable, residential and data centre segments. Investors and prospective customers will be watching for named commercial partnerships and independently validated benchmark data as CBAK seeks to translate exhibition interest into European revenue.