The smartphone has a technology, called QI, created for use in the energy, power, electricity, low-induction. The principle of magnetic induction A circuit for converting the magnetic field QI is a coil, coil coating several bands from the nested loop. When sending electricity to the coil on one side and the energy flowing out of the coil ends. The magnetic field at middle band of the coils. It looks like the same voltage but uses installed on the lid of a mobile. When both devices must not exceed 4 mm. And changing the charging voltage to the battery, mobile. And here is the manual for the transmitted power phankrasae without the use of the power cord to the back of the smartphone.
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