SHANGHAI / NINGBO – Bak Battery, a key player in lithium-ion innovation, made a strong impression at the 39th China International Hardware Fair (CIHF 2026) this week. The company introduced its latest all-tab cylindrical cell, the 2170-50D2, alongside an updated lineup of 18650 and 2170 all-tab products. Held from March 24 to 26, the exhibition served as the launch platform for Bak’s newest high-energy, high-power solution, reinforcing the brand’s commitment to accelerating the evolution of professional cordless tools and related industries.

The centerpiece of Bak’s booth was the 2170-50D2 all-tab cell, making its global debut. Engineered to bridge the gap between high capacity and high power, the new cell is designed to deliver “hardcore support” for professional-grade tools. According to Bak Battery, the 2170-50D2 utilizes a solid-state electrolyte coating technology—an industry first for the company—that enhances safety from both material and structural perspectives. This coating significantly improves stability under demanding conditions, ensuring reliable operation even during prolonged, high-frequency work cycles.

⚡ First look: 2170-50D2 highlights

- Energy density: 265 Wh/kg · Internal resistance: ≤5 mΩ

- Max discharge current: 50A · Operating temperature: -20℃ to 80℃

- Mass production scheduled: Q4 2026

In terms of endurance, the 2170-50D2 achieves an energy density of 265 Wh/kg, which translates into longer runtime per charge and helps reduce productivity losses caused by frequent recharging. The cell’s internal resistance remains below 5 milliohms, enabling a sustained 50A maximum discharge current. Bak representatives noted that such low resistance not only supports stable power output under heavy loads but also minimizes temperature rise and energy loss, effectively helping to prevent thermal-induced shutdowns or power fade during demanding applications. Equally impressive, the 2170-50D2 operates reliably across a wide temperature range from -20℃ to 80℃, making it suitable for extreme environments—from freezing outdoor construction sites to high-temperature industrial settings. The cell is designed for a variety of applications, including high-end power tools, robotics, cleaning equipment, and unmanned aerial vehicles (UAVs), with volume production scheduled for the fourth quarter of 2026.

Expanding the all-tab portfolio: from 18650 to 2170

Bak Battery continues to advance its all-tab technology across multiple form factors. In addition to the new 2170-50D2, the company showcased updated versions of its 18650-30D, 2170-40D, and 2170-45D cells at CIHF 2026. These products retain standard dimensions but incorporate iterative improvements in fast-charging capability, power delivery, and operational safety. “We’re committed to delivering higher practical value without forcing design changes on our customers,” a Bak engineer explained. The enhanced cells aim to provide smoother, more dependable user experiences in cordless tools, addressing real-world performance gaps.

These steady improvements reflect Bak’s deep focus on end-user pain points: range anxiety caused by insufficient battery life, power drop under high-torque conditions, and unstable behavior in harsh environments. These challenges have become central drivers behind Bak’s product roadmap. The company’s all-tab technology now spans a comprehensive matrix covering 18-series, 21-series, and 46-series cylindrical cells, demonstrating growing technological maturity.

- 18-series: 18650 all-tab

- 21-series: 2170 all-tab family

- 46-series: Large-format all-tab

Beyond power tools: new frontiers for all-tab technology

While the hardware show floor highlighted tools and outdoor equipment, Bak Battery is actively extending its all-tab expertise into emerging sectors. The company revealed that its high-power, high-safety cell architecture aligns closely with the stringent requirements of electric vertical takeoff and landing (eVTOL) aircraft, backup battery units (BBU) for data centers, and next-generation robotics. These applications demand ultra-high reliability, extreme cycle life, and consistent power output—precisely where Bak’s all-tab platform excels. “The same technological pillars that make our cells ideal for professional power tools also unlock new growth opportunities in urban air mobility and AI-driven robotics,” a senior Bak strategist commented during the event.

The shift toward high-value segments underscores Bak’s ambition to become a comprehensive energy solution provider. The company’s all-tab portfolio already serves a wide range of industrial and consumer applications, and the expansion into eVTOL and data center infrastructure is expected to accelerate revenue diversification in the coming years.

Relentless pursuit of performance

From addressing individual user frustrations to empowering an entire ecosystem of cordless equipment, Bak Battery’s pursuit of extreme performance remains unwavering. Company officials emphasized that ongoing innovation in material science, structural design, and manufacturing processes will continue to fuel product breakthroughs. With the 2170-50D2 set to enter mass production later this year and a robust pipeline of all-tab cells in development, Bak aims to deliver more reliable and efficient energy solutions across an ever-expanding range of scenarios—from construction sites to the skies.