The iPhone8 and the iPhone X are Apple's first models that support wireless charging, but the wireless charging power is limited to about 5W, so in fact the experience is not very good, because it is too slow. However, according to the charging head network reported that industry engineers broke the news, Apple's latest iOS11.2 quietly open the 7.5W wireless fast charge, but this upgrade log no mention.
Compared to the power of 5W, 7W wireless charging power increased by a full 50%, which makes the wireless charging reached a very practical level.More worth mentioning is that Chinese engineers not only found the 'egg', but also their Successfully cracked, it is learned that the engineer uses self-developed 15W transmitter power wireless charging transmitter board, recorded the transmitter input voltage and current up to 9.14V, 1.46A, which is the transmitter power to 13.4W, through the energy transfer efficiency loss discount, The power reaching the handset is: 13.4W (input power of the transmitter) x 80% (wireless transmitter loss) x 80% (wireless receiver loss) x 94% (mobile phone internal efficiency) = 8.02W (mobile phone actual charging power) , Reach Apple 7.5W wireless fast charge power standard.
This means that without the expensive Apple's own accessories also can be quickly and wirelessly charged to the iPhone, of course, Apple's follow-up may also block the crack, let us wait and see.
▲ wireless charging board transmitter power up to 13.4W, iPhone X actually receive power greater than 8W, crack success!
