SHANGHAI / NINGBO – Bak Battery, a prominent driving force in lithium-ion innovation, made a strong impression at the 39^th China International Hardware Fair (CIHF 2026) this week. The company introduced its latest all‑tab cylindrical cell, the 2170-50D2, alongside a refreshed lineup of 18650 and 2170 all‑tab products. Held from March 24 to 26, the exhibition served as the launchpad for Bak’s newest high‑energy, high‑power solution, reinforcing the brand’s commitment to accelerating the evolution of professional cordless tools and adjacent 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 aims to provide “hardcore support” for professional‑grade tools. According to Bak Battery, the 2170-50D2 leverages a solid‑state electrolyte coating technology—an industry‑first for the company—that strengthens 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 reduces productivity losses caused by frequent recharging. The cell’s internal resistance stays below 5 milliohms, enabling a sustained 50A maximum discharge current. Bak representatives noted that such low resistance not only maintains stable power output under heavy loads but also minimizes temperature rise and energy loss, effectively preventing 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 scenarios. The cell is designed for diverse applications including high‑end power tools, robotics, cleaning equipment, and unmanned aerial vehicles (UAVs), with volume production slated for the fourth quarter of 2026.

Expanding the all‑tab portfolio: from 18650 to 2170

Bak Battery continues to push its all‑tab technology across multiple formats. Beyond 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 upgrades 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.

The 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 the 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 showfloor spotlighted 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—exactly 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 extension 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 unabated. 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.