Xiaomi Launches Redmi K90 Ultra Featuring an 8,550mAh Battery

Xiaomi just launched the Redmi K90 Ultra in China. This new phone brings massive hardware power to the market. It grabs attention right away because it packs a real cooling fan inside the body. It also runs on the high-end Snapdragon 8 Elite chip - so it is surely ready for some addictive gaming.

The phone comes with a 6.83-inch flat AMOLED screen. It looks sharp with a 1.5K resolution. Gamers will love the smooth 165Hz refresh rate. Xiaomi uses special M10 display material here. This helps the screen reach a peak brightness of 3,500 nits. You can easily read it outside in bright sunlight. The screen also responds to your touch very fast to reduce input lag. Inside the phone, you get the Snapdragon 8 Elite chip. This fast 3nm processor pairs with up to 16GB of fast RAM and 512GB of storage. A second D2 display chip handles extra work to keep game visuals smooth.

Heat is always a problem for fast phones. Xiaomi fixed this by adding an active air-cooling system. A small 18.1mm fan spins inside to blow hot air out. It stays quiet at just 32dB. This fan works with a large vapor chamber to cool the main chip. The power source is just as impressive. The phone holds a massive 8,550mAh battery. You rarely see batteries this big in normal phones. It charges back up quickly using 100W wired fast charging. It can even charge your other small devices using 22.5W reverse charging.

The camera setup is simple but effective. The main rear camera uses a 50-megapixel Light Hunter 800 sensor. It has optical image stabilization to keep your photos clear at night. There is also an 8-megapixel ultra-wide camera for landscape shots. The phone can record high-quality 8K video. On the front, a 20-megapixel camera handles your selfies and video calls. The build quality is very strong. The phone carries IP66, IP68, and IP69 ratings against dust and water. The internal cooling fan even has its own waterproof ratings. You also get clear Bose stereo speakers and a secure 3D fingerprint scanner.

The phone ships with the HyperOS 3 operating system, that offers a clean and smooth user interface. You can buy the device in three colors. The options are Shadow Black, Space Silver, and Sky Blue. The base version with 12GB of RAM and 256GB of storage starts at 2,799 yuan. The top model offers 16GB of RAM and 512GB of storage for 3,499 yuan.