A Xiaomi Redmi K40 smartphone could be in the works that may feature 33 W fast charging, possibly a 144 Hz refresh rate, and even a MediaTek Dimensity 1000+ chipset. A Redmi device with the model name M2006J10C was spotted on 3C certification that has led to speculation that a Redmi K40 smartphone is currently in development.

3C certification (Compulsory Certification of China) for a Redmi M2006J10C has been spotted that has revealed the power specifications for the device. As discovered by MyDrivers, the potential Xiaomi Redmi K40 smartphone has 33 W fast-charge technology (“DC11.0 V/3.0 A Max” – as stated on the document). The Redmi K30 Pro came with the same charger, and this certified charging value is higher than that of the 27 W fast-charging technology for the regular Redmi K30 (4G) and the 30 W power made available to the Redmi K30 (5G).
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https://www.notebookcheck.net/Potential-Xiaomi-Redmi-K40-smartphone-spotted-in-3C-certification-coming-with-33-W-fast-charge-and-possibly-a-Dimensity-1000-SoC-and-144-Hz-display.476660.0.html