Over the past couple of years, smartphone battery capacities have surged, with 7,000–8,000mAh becoming the new norm and even 10,000mAh models hitting the market. In contrast, laptop battery capacity has seen only incremental improvements. This disparity can be attributed to two key factors:

First, the rapid evolution of smartphone capabilities and rising user expectations have spurred swift advancements in battery technology. Innovations like silicon-carbon anode batteries have allowed smartphones to pack in larger capacities without sacrificing sleek designs.

Second, laptop batteries are constrained by civil aviation regulations, which prohibit carrying batteries exceeding 100Wh on flights. Consequently, the maximum battery capacity for gaming laptops is capped at 99.9Wh, while ultrabooks prioritize striking a balance between portability and battery longevity. Moreover, the integration of cutting-edge battery technologies in laptops typically lags behind that in smartphones, as manufacturers tend to adopt these innovations only after supply chain technologies have matured and costs have declined.