In general, wireless charging will heat up
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1. Scheme selection. This is the most fundamental reason, different solutions have their own characteristics, such as NXP, IDT, easy charge, Xxin-sun and other wireless charging solutions, whether in charging efficiency, mobile phone compatibility, or in the disconnected charge, temperature control and other aspects are different.
Apple's magnetic wireless charging equipment generally does not appear hot, if there is an obvious situation of hot may be short circuit or unstable line connection or virtual connection caused by the problem, need to be repaired and then charged
Excessive charging will cause heat, depending on the weather, rarely will heat in winter, easy to heat in summer