2026 marks a decisive shift for the humanoid robot industry: the focus is moving from proving that the technology works to deploying it in the real world. With policy support, capital investment, and market demand converging, the power battery—the “heart” of a robot—has become a core factor determining both the speed of commercialization and the boundaries of application.
Industrial robots require long runtime to support continuous operation. Consumer robots need high instantaneous current to climb slopes and overcome obstacles. Medical and rehabilitation robots place the highest demands on safety. Instead of treating these fragmented needs one by one, BAK Battery adopts a platform strategy. Using its mature 21700 cylindrical cell as the foundation, BAK combines standardized design with material innovation to adapt precisely to a wide range of scenarios.
To serve a market divided into distinct use cases, BAK makes the 21700 cylindrical cell the core power platform for robots, and from that single form factor develops three product directions covering power, capacity, and safety.
- 6500mAh ultra-large capacity
- 315Wh/kg high energy density
- Supports 4C discharge
- Internal resistance ≤8mΩ
- Wide operating temperature range from -30°C to 70°C
Designed for long-endurance applications such as home service and routine inspection, this cell can improve runtime by up to 30%.
- Full-tab design and solid-state electrolyte coating technology
- Internal resistance ≤5mΩ
- Supports 60A continuous discharge
- Wide operating temperature range from -20°C to 80°C
Designed for high-burst-power scenarios such as logistics delivery and climbing under load.
- LMFP and high-nickel hybrid system
- Passes stringent new national standard safety tests, including nail penetration and overcharge
Designed for safety-critical applications such as medical and rehabilitation robots that work in close contact with people.
Because all these cells share the same 21700 dimensions and interface, BAK can flexibly deliver differentiated solutions for different priorities—long endurance, high burst power, or extreme safety. Home service, logistics delivery, and medical care applications can all be addressed quickly from the same platform.
Over the next three to five years, cylindrical lithium cells will remain the main power source for large-scale robot deployment, while hybrid solid-liquid cells will gradually enter high-end humanoid and specialized applications. BAK Battery is using its proven cylindrical platform to meet current market demand and advancing solid-state battery technology to create the next stage of growth. In doing so, it supports the humanoid robot industry’s transition from technical demonstration to full commercial deployment. Guided by the belief that “power defines boundaries,” BAK is deeply embedded in the industry chain and committed to driving the leap from validated technology to intelligent applications everywhere.
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