“Charging with 120W is a very difficult choice.” Redmi Head on the Difficulties of Implementing Heavy Duty Charging in Redmi Note 11 Pro +

This week Xiaomi introduced the Redmi Note 11 smartphones, and the top model of the line, Redmi Note 11 Pro +, features support for 120W charging. Now the head of the Redmi brand, Lu Weibing, has spoken on this topic. It was not easy to implement such a powerful system in a mid-range model, he said.

The top manager elaborated on three factors that reveal the essence of the complexity of the solution. The first factor is technical or engineering. At the moment, such fast charging is possible only when using two battery cells – this is the only way to achieve good heat dissipation, as well as make the smartphone thin and light. But placing two batteries in a case is difficult in terms of layout and the location of other components.

The second factor is the high cost of such a solution. Support for charging 120W power requires the use of expensive components in the entire chain: motherboard-battery-cable-charger. For a flagship smartphone, the rise in price under the second factor is not as sensitive as for a mid-range model.

The third factor is the lack of components. A top Xiaomi manager complains that there are no charging controllers on the market, and you can’t buy them, even if you pay extra. Therefore, we have to look for workarounds. Specifically, in the case of Redmi Note 11 Pro +, this solution was to use two 67-watt controllers. So, theoretically, the smartphone supports charging with a capacity of not 120, but 134 watts.

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