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Silicon-Carbon Battery

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Xiaomi launches Redmi Note 17 Pro Max globally with 10,000mAh battery at $499

Xiaomi has released the Redmi Note 17 Pro Max worldwide, featuring a massive 10,000mAh silicon-carbon battery, though European units get a slightly smaller 9,210mAh version. The device supports 100W wired charging, promising a full charge in 80 minutes and all-day power from just a 20-minute top-up, plus 27W reverse charging but no wireless option. It also boasts rugged durability with IP68/IP69/IP69K ratings and Gorilla Glass Victus 2 protection, though it runs a downgraded Snapdragon 6 Gen 5 chip compared to its predecessor.

Xiaomi's Redmi Note 17 Pro Max packs 9,210mAh battery for three-day use

Xiaomi has launched the Redmi Note 17 Pro Max with a 9,210mAh dual-cell silicon-carbon battery in Europe, and a 10,000mAh single-cell version in some other markets. The company claims up to three days of typical use or 37 hours of continuous video playback, alongside 100W wired charging that can fully charge the device in just over an hour.

Samsung reportedly tested 7,000mAh battery for Galaxy S27 Ultra before scaling back

A Korean leaker claims Samsung built several Galaxy S27 Ultra prototypes, including one with a 7,000mAh battery and versions that dropped the S Pen to fit it. Samsung is said to have abandoned that extreme option, instead settling on a 5,700mAh to 6,000mAh target, possibly using silicon-carbon battery technology.