Redmi K90 Ultra Could Launch With 10,000mAh Battery and Slim Build

On: December 16, 2025 |
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Redmi appears to be preparing its next Ultra-branded performance phone, and early leaks suggest that the Redmi K90 Ultra could bring some unusually bold changes. Although the company has not officially announced the device yet, multiple reports indicate that this model may focus heavily on battery capacity and charging speed while still keeping a relatively slim design.

Redmi K90 Ultra Leaks Hint at Major Battery Upgrade

Recent information shared by well-known tipster Digital Chat Station points toward a smartphone that fits closely with what is expected from the Redmi K90 Ultra. While the device name was not directly mentioned, several clues reportedly connect it to Redmi’s performance-oriented Ultra lineup.

According to the leak, the upcoming phone may feature a 10,000mAh battery, which would be a major jump compared to the 7,410mAh battery used in the Redmi K80 Ultra. If accurate, this would place the K90 Ultra among the phones with the largest batteries ever seen in a mainstream flagship-style device.

What makes this leak more interesting is the claim that Redmi is managing this large battery without making the phone bulky. The device is said to have a body thickness of under 8.5mm, suggesting a strong focus on internal design efficiency.

Charging Speed and Performance Expectations

Alongside the massive battery, the Redmi K90 Ultra is tipped to support 100W charging, and the leak suggests this could apply to both wired and wireless charging. If this turns out to be true, users could see fast top-ups despite the large battery size.

On the performance side, earlier hints from the same tipster suggest that the device will belong to a performance-focused sub-series. It is expected to use a flagship MediaTek Dimensity 9-series chipset, placing it firmly in the high-performance category aimed at gamers and power users.

Display, Build, and Other Features

Additional leaks point to a large flat LTPS display that could measure around 6.8 inches. The screen is expected to offer 1.5K resolution along with a 165Hz refresh rate, which would make it well suited for gaming and smooth scrolling.

The phone is also rumored to feature a metal frame, an ultrasonic in-display fingerprint sensor, and improved water and dust resistance, indicating a more premium build compared to standard Redmi models.

Also Read: Oppo Reno 15c Launched: Check Specs, Battery, and Fast Charging Details

Expected Launch Timeline

At the moment, Redmi has not shared any official launch details for the K90 Ultra. However, if the company follows a similar release pattern to the previous generation, the device could make its debut around June next year.

Final Thoughts

Based on current leaks, the Redmi K90 Ultra is shaping up to be an ambitious upgrade. A 10,000mAh battery, 100W charging, and a slim body are not commonly seen together, especially in a performance-focused phone. While nothing is confirmed yet, the early information suggests Redmi may be aiming to set a new benchmark for battery life without sacrificing speed or design. As always, the final picture will become clearer once official details emerge.

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Aman Kumar

Hi, I’m Aman Kumar – the founder and main writer of Techzbit.com. I share news and updates about smartphones, gadgets, and the latest technology. My aim is to provide clear, helpful, and honest information so readers can easily understand what’s happening in the tech world. Every article on Techzbit is written in simple language, keeping your needs and understanding in mind.

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