Redmi K90 Ultra Battery and Display Details Confirmed Ahead of Launch

The Redmi K90 Ultra borrows the more premium K90 Max's design, display and battery, while featuring a slightly toned-down processor

Siddhartha Samaddar profile pictureby Siddhartha Samaddar
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Redmi K90 Ultra back design showcased while in hand

Image Credit: Weibo/ @Redmi

Summary

  • Redmi K90 Ultra is confirmed to feature a massive 8,550mAh battery with 100W fast USB-C charging support.
  • The phone is confirmed to feature a 6.83-inch M10 AMOLED 165 Hz display with 165 FPS gaming support in over 40 titles.
  • The Redmi K90 Ultra is launching in China on June 30, 2026, at 19:00 CST (or 4:30 PM IST).
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The Redmi K90 Ultra will be launching in China next week as a more affordable alternative to the Redmi K90 Max. After revealing its design and chipset earlier, Redmi has now confirmed its battery capacity and display details. 

Redmi K90 Ultra Confirmed to Pack a Massive 8,550mAh Battery

The official Redmi Weibo account has confirmed that the Redmi K90 Ultra will pack a massive 8,550mAh battery, the same as the Redmi K90 Max. It will also support 100W fast USB-C charging, 22.5W reverse wired charging and Bypass charging.

Redmi K90 Ultra battery and display details
Image Credit: Weibo/ @Redmi (edited by Siddhartha Samaddar/ Beebom Gadgets)
Redmi K90 Ultra battery and display details
Image Credit: Weibo/ @Redmi (edited by Siddhartha Samaddar/ Beebom Gadgets)

The phone will also feature a 6.83-inch M10 AMOLED flat display with a 165 Hz refresh rate and up to 3,500 nits of peak brightness. Redmi claims the phone supports 165 FPS gaming in over 40 titles and comes with Xiaomi’s Qingshan eye protection technology.

Apart from this, the brand previously confirmed that the Redmi K90 Ultra will be powered by the Snapdragon 8 Elite chipset, which is slightly underpowered compared to the Max's Dimensity 9500.

Redmi K90 Ultra design
Image Credit: Weibo/ @Redmi (edited by Siddhartha Samaddar/ Beebom Gadgets)
Redmi K90 Ultra design
Image Credit: Weibo/ @Redmi (edited by Siddhartha Samaddar/ Beebom Gadgets)

From the Space Silver colourway to a similar Vortex Airflow Design with an active cooling fan, the upcoming phone will bring all the bells and whistles of the K90 Max. However, it will be priced around 3,000 Chinese yuan (approximately Rs 42,000).

As for the rest of the details, leaks and reports suggest that the Redmi K90 Ultra could feature an anodised CNC aluminium frame, an ultrasonic fingerprint scanner, stereo speakers, IP68 + IP69 ratings and an X-axis linear motor.

With the Redmi K90 Ultra launch date in China confirmed for next week, we won't have to wait much longer to know the remaining details. Stay tuned for all the updates.

Siddhartha Samaddar profile picture

Tech News Writer

Expertise :

Siddhartha is a tech writer with 3.6 years of experience, focused on making tech easy to understand for everyone. He enjoys breaking down complex ideas into simple, helpful bite-sized content. Outside of work, he loves reading books and often finds himself daydreaming about the dream gaming setup he hopes to build someday.

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