CBAK Energy Reports Progress in Customer Testing of Full-Tab 26650 LFP Cells for AI Data Center Backup Power

About this update from Cbak Energy Technology, Inc.

Samples of the 26650 HP V2.0 and 26650 PFS2 V2.0 are under evaluation by leading customers; early feedback indicates strong performance across key metrics, and multiple customers are advancing to joint module-level validation DALIAN, China, July 14, 2026 (GLOBE NEWSWIRE) -- CBAK Energy Technology Limited (NASDAQ: CBAT) ("CBAK Energy" or the "Company"), a leading lithium-ion battery manufacturer and electric energy solution provider in China, today reported progress in customer testing and outlined the technical roadmap and commercialization strategy for its new 26650 HP V2.0 and 26650 PFS2 V2.0 full-tab cylindrical LFP cells designed for AI data center battery backup unit ("BBU") and uninterruptible power supply ("UPS") applications. The update was provided in a recent interview with Huabin Dai, who serves as Deputy General Manager of Dalian CBAK Power Battery Co., Ltd. ("Dalian CBAK"), a wholly owned subsidiary of the Company, and as R&D Lead for the 26650 HP/PFS2 V2.0 program. Huabin Dai, Deputy General Manager of Dalian CBAK, led the 15-month R&D program for the new full-tab 26650 cells designed for AI data center backup power. As rack-level power density rises in AI data centers, backup power requirements are expanding beyond stored capacity alone to include faster response, higher discharge capability, effective thermal control, and long-term standby reliability. "We recognized early that these requirements would reshape cell design for AI data center backup power," Dai said. "For rack-level BBU and UPS applications, high-rate discharge, long service life, and thermal safety must be achieved together. Over 15 months, our team completed dozens of material-formulation iterations and validated more than 20 process routes." Dai outlined the Company's approach across three areas: the technical foundation of the cells, the rationale for selecting the 26650 format, and CBAK Energy's commercialization and cylindrical battery platform strategy. Purpose-Built for AI Data Center Backup Power At the material level, Dai said Dalian CBAK developed dedicated cathode, anode, and electrolyte formulations to support high-rate backup operation. According to Dai, these formulations, together with the broader cell design, are intended to address three operational challenges in AI data center backup power: voltage sag during rack-level load transients, heat buildup during high-rate discharge in enclosed cabinets, and accelerated degradation under frequent pulse cycling. The core differentiator, Dai said, is CBAK Energy's full-tab architecture, supported by seven years of R&D in full-tab technology. By expanding the current-carrying area and reducing ohmic resistance, the design supports high-rate discharge within the standard 26650 format. Under specified internal test conditions, the 26650 HP V2.0 and 26650 PFS2 V2.0 achieved maximum discharge power of 260 W and 310 W, respectively. According to Dai, internal testing measured the internal resistance of the full-tab 26650 cells at approximately 2–3 mΩ, compared with approximately 6–7 mΩ for conventional multi-tab cells. In CBAK Energy's assessments of BBU and UPS projects, this lower-resistance architecture is designed to support more stable voltage output during instantaneous high-current discharge, reduce pack-level heat generation, and help slow pack-level degradation. Depending on system design and operating conditions, CBAK Energy estimates that these characteristics could reduce thermal-management costs in equipment rooms by 5% to 10% and extend system service life by 10% to 15% compared with multi-tab alternatives, helping reduce operating and replacement burdens over the system lifecycle.

View stock analysis, news, and events for Cbak Energy Technology, Inc.