OnePlus 15 Beats IPhone 17 Pro Max And Xiaomi 17 Pro Max In Battery Life

A new battery test has crowned the OnePlus 15 as the endurance champ of 2025, outlasting both the iPhone 17 Pro Max and Xiaomi 17 Pro Max.

YouTuber TechDroider ran all three phones through a 13-hour real-world test: three hours of PUBG Mobile, three hours of YouTube streaming, an hour and a half of browsing and Instagram, and nonstop 4K 60fps recording until they dropped.

All started at 100%, and here’s how things ended up:

• Xiaomi 17 Pro Max: 12h 50m
• iPhone 17 Pro Max: 13h 02m
• OnePlus 15: 13h 40m

Pretty close race, but OnePlus managed to hold on for nearly 40 minutes longer than Apple’s flagship.

The iPhone (physical SIM variant) deserves some credit, too — its 4,832 mAh battery kept up surprisingly well against the 7,300 mAh cell in the OnePlus 13 and 7,500 mAh pack inside Xiaomi 17 Pro Max (our review). That’s pure software efficiency from iOS and the A19 Pro chip doing the heavy lifting.

Still, OnePlus takes the win. Its mix of Snapdragon 8 Elite Gen 5, a silicon-carbon battery, and software optimizations seems to strike the right balance between performance and efficiency. OnePlus had talked up its performance tuning in ColorOS, and it’s good to see the OnePlus 15 living up to that promise.

And even though the iPhone 17 Pro Max runs on a much smaller battery, it’s neither slimmer nor lighter than its Android rivals:

OnePlus 15: 8.1 mm, 215 g

Xiaomi 17 Pro Max: 8 mm, 219 g

iPhone 17 Pro Max: 8.8 mm, 233 g

It also charges slower and packs a technically inferior heat dissipation system. So, for anyone without a specific preference for iOS, neither performance nor in-hand comfort should be a dealbreaker when picking the OnePlus 15.

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