Redmi K90 Ultra: 10000mAh Battery in an 8.5mm Slim Body? Unbelievable Specs Revealed! (2026)

A bold leap in battery life meets a slim, premium design. A tipster going by Digital Chat Station claims an upcoming device will pair an ultra-large 10,000mAh battery with a sleek profile under 8.5mm thick, delivering both remarkable endurance and a refined in-hand feel. In a Weibo post, the tipster notes support for 100W wired charging and full-speed wireless charging, all while maintaining a slim chassis.

While the brand isn’t explicitly named, clues point toward a Redmi K90 Ultra. Digital Chat Station suggested this device would sit in a performance-oriented sub-series and likely run a flagship MediaTek Dimensity 9-series chipset.

This represents a notable upgrade over the Redmi K90 Pro Max, which houses a 7,560mAh battery. Earlier chatter floated an 8,000mAh cell, but it now appears Xiaomi has accommodated a larger 10,000mAh pack without sacrificing the lean form factor.

In response to a user question about thickening the device to 9.5mm to fit more battery, the tipster quipped,
"So you completely don’t care about in-hand feel?" This implies the manufacturer is prioritizing ergonomics and comfort alongside long battery life.

The tipster also dismissed rumors of using mid-range processors such as the Snapdragon 7 series or Dimensity 8000 series, replying with a provocative question: "Don’t you want a top-tier processor?" signaling an expectation of flagship-grade silicon.

Preliminary specifications previously leaked suggest a newly developed flat display around 6.8 inches, likely 1.5K resolution with a 165Hz LTPS refresh rate. The design is expected to feature a metal frame, an ultrasonic in-display fingerprint sensor, and enhanced water and dust resistance.

The trend toward higher-capacity batteries isn’t limited to Xiaomi. OnePlus is reportedly targeting a 9,000mAh battery for its upcoming Turbo series, indicating a broader industry shift toward endurance-focused phones paired with high-refresh-rate screens.

For ongoing updates, visit our News Section.

Stay current with tech news by joining our Telegram community and subscribing to our daily newsletter for top stories.

Redmi K90 Ultra: 10000mAh Battery in an 8.5mm Slim Body? Unbelievable Specs Revealed! (2026)
Top Articles
Latest Posts
Recommended Articles
Article information

Author: Errol Quitzon

Last Updated:

Views: 5920

Rating: 4.9 / 5 (59 voted)

Reviews: 82% of readers found this page helpful

Author information

Name: Errol Quitzon

Birthday: 1993-04-02

Address: 70604 Haley Lane, Port Weldonside, TN 99233-0942

Phone: +9665282866296

Job: Product Retail Agent

Hobby: Computer programming, Horseback riding, Hooping, Dance, Ice skating, Backpacking, Rafting

Introduction: My name is Errol Quitzon, I am a fair, cute, fancy, clean, attractive, sparkling, kind person who loves writing and wants to share my knowledge and understanding with you.