Battery Test: OnePlus 15 vs. vivo X300 Pro, iPhone 17 Pro Max, Galaxy, Pixel, Xiaomi

Who has the best battery life this year? OnePlus 15 vs. vivo X300 Pro, iPhone 17 Pro Max, Samsung Galaxy S25 Ultra, Google Pixel 10 Pro XL, or Xiaomi 17 Pro Max?
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► OnePlus 15: https://tradingshenzhen.com/en/oneplus-15/oneplus-15-16gb256gb?affp=213810
► Xiaomi 17 Pro Max: https://tradingshenzhen.com/en/xiaomi-17-series/xiaomi-17-pro-max-12gb512gb?affp=213810
► vivo X300 Pro: https://tradingshenzhen.com/en/vivo-x300-series/vivo-x300-12gb512gb?affp=213810