New leaks around the Xiaomi 17 series suggest the upcoming models will offer significant improvements in battery capacity compared to last year’s line. The rumours come ahead of the expected launch on September 30, 2025 in China, and revolve around battery sizes and charging speeds for several variants.
🔋 What the Leaks Say
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The standard Xiaomi 17 could come with a 7,000 mAh battery — a big jump from the 5,400 mAh pack in the Chinese version of the Xiaomi 15.
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The Xiaomi 17 Pro is expected to carry a 6,300 mAh battery, up slightly from the 6,100 mAh found in the Xiaomi 15 Pro.
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The 17 Pro Max is rumoured to have a large 7,500 mAh battery — the biggest among the main models so far.
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There’s also talk of an Xiaomi 17 Ultra, which may include a 6,800 mAh battery. That’s a noticeable increase over the ~6,000 mAh battery in the 15 Ultra.
⚡ Charging & Efficiency
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Across the series, 100 W fast charging is expected. This is a small upgrade over the 90 W charging of the previous generation (Xiaomi 15 / 15 Pro).
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Of course, larger battery sizes are positive — but real-world battery life will also depend heavily on the efficiency of the new Snapdragon 8 Elite Gen 5 chip, which will power these phones.
✅ What This Means & What to Watch For
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If the leaks are correct, Xiaomi is making a strong push to address battery life, a frequent concern among flagship users.
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The Pro Max model looks especially promising for users who want long runtimes.
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On the flip side, it will be interesting to see how Xiaomi balances battery size vs. phone weight & thickness. Big batteries can add bulk.
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It will also be crucial how well the new Snapdragon chip performs — both in terms of power and power efficiency. Cooling, optimization, screen resolution and refresh rate will all factor into the end battery experience.
👀 Final Thoughts
The Xiaomi 17 series appears poised to deliver meaningful battery improvements across its lineup — more so in the base and Pro Max models. Polished fast charging tech and possibly better hardware efficiency could make this generation more appealing for heavy users. We’ll have to wait for the official launch to see how well these leaks match up to real specs and user experience.
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