Xiaomi has officially launched its new flagship smartphone, the Redmi K80 Ultra, in China on June 26, 2025. Combining powerful hardware, long battery life, and an appealing price, the device is positioned as one of the most affordable flagships on the market — starting at 2,599 yuan (around $357).

Record-Breaking Battery & Battery Life

The Redmi K80 Ultra is Xiaomi’s first smartphone with a massive 7410 mAh battery, setting a new brand record. According to the company, this allows for up to 2.26 days of usage on a single charge. It supports 100W wired charging, fully recharging the phone in minutes. However, wireless charging is not included.

The device features bypass charging to reduce heat during charging sessions, extending battery lifespan. It also debuts the Hyper G1 chip for intelligent power management and uses Redmi’s largest-ever IceLoop 3D vapor chamber cooling system, ensuring stability under heavy load like gaming or multitasking.

High-End Performance

At its core is the MediaTek Dimensity 9400+ processor built on a 3nm node, delivering flagship-level performance. Paired with:

  • 12GB or 16GB LPDDR5X RAM
  • 256GB / 512GB / 1TB UFS 4.0 storage

In AnTuTu, the phone scored 3.24 million points, placing it alongside the top Android flagships of 2025.

An additional D2 AI chip enhances on-device AI performance, powering image processing and voice command features. It runs on HyperOS 2, based on Android 15, ensuring a fluid, up-to-date user experience.

Display & Design

The K80 Ultra features a 6.83" LTPS OLED display with:

  • 1.5K resolution (1280×2772)
  • 144Hz refresh rate
  • Up to 3200 nits peak brightness
  • HDR10+, HDR Vivid support
  • 2400Hz PWM dimming for eye comfort

Protected by Xiaomi Dragon Crystal Glass, the panel is surrounded by symmetrical bezels and a minimalist punch-hole camera cutout.

The body is made of a metal frame with a matte fiberglass back, giving it a premium look while resisting fingerprints. The device is:

  • 8.18mm thick
  • Weighs 219g
  • IP68/IP69 certified, surviving submersion up to 2.5 meters

Color options: Spruce Green, Ice Blue, Moon White, and Sandstone Gray.

Camera & Multimedia

The camera setup includes:

  • 50MP main camera (Light Hunter 800, f/1.6, 1/1.55", OIS)
  • 8MP ultra-wide camera (OV08F, 120° FoV)
  • 20MP front camera (OV20B)

Video support goes up to 8K@24fps, with AISP image processing algorithms improving quality across scenarios.

For audio and haptics:

  • AAC 1115 stereo speakers
  • X-axis linear motor (CSA0916C) for precise vibration feedback

Connectivity highlights:

  • Wi-Fi 7, Bluetooth 5.4, NFC, and IR blaster

Pricing & Variants

The Redmi K80 Ultra is already on sale in China with these configurations:

  • 12GB + 256GB: ¥2599 (~$357)
  • 12GB + 512GB
  • 16GB + 256GB
  • 16GB + 512GB
  • 16GB + 1TB

There are rumors it may launch globally as the Xiaomi 15T Pro, though a global release date is not yet confirmed.

Compared to the Competition

In the ~$400 price range, the K80 Ultra competes with:

  • Realme GT 7
  • iQOO Neo 10 Pro+
  • OnePlus Ace 5 Ultra

What sets the K80 Ultra apart:

  • Largest battery in the segment
  • 3nm flagship SoC
  • Premium build (metal + fiberglass)
  • IP68/IP69 water and dust resistance

Some trade-offs include the lack of a third rear camera, unlike its sibling Redmi K80 Pro, but the overall value remains unmatched.

No Eco-Leather = No Mold Risk

Unlike models like the Poco X7 Pro, which faced user complaints over mold-like stains on eco-leather backs, the K80 Ultra uses fiberglass, a material that is:

  • Moisture-resistant
  • Durable
  • More hygienic over time

This addresses one of the recent concerns in Xiaomi’s material choices and improves long-term usability.

Conclusion

The Redmi K80 Ultra is a performance-focused, long-lasting flagship at a midrange price. With standout features like:

  • Massive 7410 mAh battery
  • Dimensity 9400+ 3nm processor
  • Bright, fast OLED display
  • Premium build
  • IP68/IP69 durability

…it offers exceptional value for power users, gamers, and anyone looking for flagship performance without paying a flagship price. Despite minor compromises (like no wireless charging), the K80 Ultra is a top contender in 2025’s best value smartphones.

Khoren Grigoryan