Xiaomi's new flagship packs 8,500mAh while top U.S. Android phones sit near 5,000mAh.
Xiaomi launched the 18 Pro Max in China on Sept. 23 with an 8,500mAh battery.
The Galaxy S26 Ultra has 5,000mAh. The Pixel 11 Pro XL has 5,115mAh, less than the Pixel 10 Pro XL's 5,200mAh.
Chinese brands use silicon-carbon cells, and transport rules cap energy per cell outside China.
Code suggests global versions drop to 6,000mAh and 7,050mAh, still well above U.S. flagships.
A leak says steel-shell batteries could reach 10,000mAh. U.S. phones need more than efficiency claims.
Xiaomi Just Shipped an 8,500mAh Flagship. Why Are U.S. Android Phones Still Stuck Near 5,000?