The 210W mobile charging technology that Xiaomi released under its Redmi sub-brand in late October was eventually surpassed by a 240W version from Realme, a member of the Oppo and OnePlus families, in early February.
Given that it’s MWC week, Xiaomi quickly reacted today with a massive 300W demo, cutting the charging time to just under five minutes—nearly half that of the two earlier successes. A improved modular design and internal heat dissipation allow this new 300W charger to be the same size as its older 210W predecessor, according to Xiaomi.
The Redmi Note 12 Pro+ used in the 300W demo used a 4,100mAh battery instead of the 4,300mAh found in the 210W Redmi Note 12 Discovery Edition (and the Realme has a far more generous 4,600mAh).
The Phone Reached 20% In 1 Minute Only
The phone reached 20 percent in little over a minute, 50 percent in 2 minutes and 12 seconds, and 100 percent in just under five minutes, as you can see in the video. The charger’s power metre showed a high input of just over 290W, and at one time it was able to maintain 280W and above for around two minutes.
— Southside Technology (@southsidetech) February 28, 2023
The battery in question, according to the manufacturer, contains stronger 15C cells (as opposed to 10C cells in the Discovery Edition), which use novel carbon materials in place of some standard graphite elements to reduce the thickness of the electrodes by 35%.
This lithium ion battery has a greater power density, a faster charge and discharge rate, and appears to emit less heat overall thanks to an improved electrolyte mix. Next, in a revolutionary “sandwich” design, these ultra-thin cells are stacked with thermal materials in between to maximise heat dissipation while making greater use of internal space.
Regarding safety, Xiaomi asserted that the system has over 50 features to monitor the current, voltage, and temperature on each charging chip.
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The mobile industry has undoubtedly reached another milestone thanks to Xiaomi’s announcement today, even though the company omitted to say whether this 300W charging technology will be made in large quantities. Furthermore, Xiaomi did not provide data on charging cycles, which serves as a sobering reminder of how a higher charging power might reduce battery lifespan.
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