If you've followed the smartphone market a little bit, you've probably heard of AirPower. This is the same charging station that Apple introduced in 2017, and two years later, without releasing it, was forced to finally cancel it . In Cupertino, they could not achieve the coordinated operation of all induction coils, of which there were about two dozen, and cope with the overheating that they provoked. But the idea was really very successful – the company wanted the smartphone to be able to be charged by placing it on any area of the charging station. The solution to the problem, as always, was found by the enterprising Chinese.
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Xiaomi has unveiled a 20W Smart Tracking Charging Pad. But its unique advantage lies not in the power output, but in the ability to charge Qi-compatible devices regardless of their location. That is, even if the user places a smartphone or wireless headphones, the charging of which the station also promises to cope with, unevenly, it will not be a problem for it, and charging will start anyway. But how did Xiaomi manage to achieve this?
AirPower analog for Android
At first, everyone decided that Xiaomi followed the Apple path and stuffed several induction coils inside the charging station, marking them, at best, overlapping each other, and at worst, just across the entire area. But the Chinese went the other way, leaving an indication of the peculiarity of the new product in its name. The word Tracking is used here for a reason. It turns out that Xiaomi has placed a resistive sensor inside the station body, which detects the position of the device being charged, and a two-axis mechanism that moves the coil to the right place.
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Considering that the station has a 20W output power, it can charge compatible devices quite quickly. That's even more than the included 18W iPhone charger offers. It charges it in a little more than an hour, which means that wireless charging from Xiaomi will do the same plus or minus. In principle, you still need to take into account the accompanying energy losses, which are inevitable with this method of recharge, but even if they extend charging by 15-25 minutes, it will still be a pretty good result.
Xiaomi wireless charging
Disassembly of the charging station showed that only one induction module is hidden under the hood, which means that only one gadget can charge it, although Xiaomi has declared compatibility with two devices at the same time. In principle, it is possible that one coil will be able to load two gadgets at once, but, firstly, this is unlikely, and, secondly, the Chinese promise that the charging device can be placed in any area of the station. Therefore, I can't imagine how the smartphone and headphones will charge if you place them in opposite corners.
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Be that as it may, the idea that the Chinese have implemented deserves my sincere admiration. Even if their station can only charge one device at a time, which will be enough for most users, it still allows it to be placed anywhere. And this is the greatest value of this kind of accessories. Yes, Xiaomi engineers had to take a more difficult path, integrating a movable mechanism inside the structure, but it turned out to be an easier and more efficient way to ensure charging of smartphones and other gadgets without the risk of overheating. In general, like.