Continuous Innovation to Build a Diversified Product Portfolio
The company has consistently maintained a high level of investment in research and development, with R&D expenditures steadily accounting for approximately 6% of annual revenue. The R&D team serves as the company’s core talent pool, with R&D personnel comprising 27% of the total workforce. A dedicated R&D center, staffed by multidisciplinary experts in electrochemistry, materials science, mechanical engineering, and automation, conducts independent research and development across the entire value chain—from material formulations and battery cell structural design to mass production processes.
The company has extensively developed a network of industry-academia-research collaboration, partnering with the Institute of Process Engineering at the Chinese Academy of Sciences to tackle the challenge of modifying materials for low-temperature lithium-ion batteries. Along the supply chain, it has established a deep strategic partnership with the publicly traded company Keheng Co., Ltd. to jointly advance the optimization of material formulations and the commercialization and mass production of new products, thereby bridging the gap between cutting-edge materials in the laboratory and large-scale production.
Through years of technological accumulation, our patents cover the full spectrum of the field—including new material formulations for both anodes and cathodes, cell structure design,Tabless production processes, and low-temperature battery modification—providing comprehensive protection for our independently developed core technologies and establishing a robust intellectual property moat.
① Low-Temperature Titanium Nitride-Modified Anode Technology (Joint R&D Achievement with the Chinese Academy of Sciences)
Through collaborative research with a team from the Chinese Academy of Sciences, the company successfully implemented titanium nitride slurry-doped graphite anode technology, achieving stable charging at -10°C in 18650 ternary battery cells with a charging efficiency exceeding 90% at 0.5C.
② In-House Developed Full-Tab Structure Cell Technology (Core Process Barrier)
The company has independently developed and implemented the R&D and mass production processes for full-tab cylindrical cells. By adopting an innovative design that uses a full-area current collector as the tab, the company has significantly shortened the current conduction path, reduced cell internal resistance, and minimized operating temperature rise. Compared to traditional cylindrical cells, the full-tab products offer four major advantages: strong fast-charging capability, stable high-rate discharge, uniform heat dissipation, and longer cycle life. They are suitable for high-power applications such as high-power power tools, drones, new energy storage, and vehicle power supplies. Prototype production and electrical performance verification for the full-tab cells have been completed, and the company is gradually advancing toward large-scale mass production.
③ Joint Custom Development of High-Nickel Cathode Materials
In collaboration with Keheng Co., Ltd., we have established a joint laboratory for high-nickel ternary cathode materials. We are optimizing high-nickel formulations to meet the demands of high-energy-density cylindrical batteries, balancing cycle stability while increasing the capacity of individual cells. This provides core material support for the company’s high-capacity cells and facilitates continuous upgrades in product energy density.
The company has established a virtuous cycle of technological iteration—developing one generation, pilot-producing one generation, and mass-producing one generation—and relies on its in-house pilot production lines to conduct small-scale and pilot-scale trials of new materials and processes, rapidly transforming laboratory technologies into market-ready products. By leveraging the full suite of BSI management systems to control R&D and production quality, the company continues to provide high-performance, customized cylindrical lithium-ion battery products to customers worldwide.
A full line of cylindrical lithium-ion battery products, available in multiple sizes to suit a wide range of applications
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| Model | Rated Capacity(Ah) | Minimum Capacity(Ah) | Rated Voltage(V) | Standard Charging Current(A) | Cell Weight(g) | Diameter(mm) | Height(mm) | Internal Resistance(mΩ) |
|---|---|---|---|---|---|---|---|---|
| INR21700-5000mAh-3C | 5 | 4.9 | 3.7 | 2.5 | 69.0±2.0 | Φ21.20±0.20 | 70.50±0.20 | ≤18 |
| INR21700-4500mAh-3C | 4.5 | 4.4 | 3.7 | 2.25 | 67.0±2.0 | Φ21.20±0.20 | 70.50±0.20 | ≤18 |
| INR21700-4200mAh-3C | 4.2 | 4.1 | 3.7 | 2.1 | 68.0±2.0 | Φ21.20±0.20 | 70.50±0.20 | ≤18 |
| INR21700-4000mAh-8C | 4 | 3.9 | 3.7 | 4 | 66.0±2.0 | Φ21.20±0.20 | 70.50±0.20 | ≤12 |
| INR21700-4000mAh-5C | 4 | 3.9 | 3.7 | 4 | 68.0±2.0 | Φ21.20±0.20 | 70.50±0.20 | ≤12 |
| INR21700-4000mAh-3C | 4 | 3.9 | 3.7 | 2 | 68.0±2.0 | Φ21.20±0.20 | 70.50±0.20 | ≤18 |
| INR21700-3000mAh-10C | 3 | 2.9 | 3.7 | 3 | 66.0±2.0 | Φ21.20±0.20 | 70.50±0.20 | ≤12 |
| INR21700-50Q | 5 | 4.9 | 3.7 | 5 | 68.0±2.0 | Φ21.20±0.20 | 70.50±0.20 | ≤4 |
| INR21700-45Q | 4.5 | 4.4 | 3.7 | 4.5 | 67.0±2.0 | Φ21.20±0.20 | 70.50±0.20 | ≤4 |
| INR21700-40Q | 4 | 3.9 | 3.7 | 4 | 67.0±2.0 | Φ21.20±0.20 | 70.50±0.20 | ≤4 |
Comprehensive and Rigorous Testing Across All Dimensions, Backed by Actual Test Data to Verify Battery Cell Quality
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