Personal magnetic absorption is divided into three kinds of the first is the formal magnetic contact charger, such as the old MacBook magnetic charger, its charging power is more than 40 watts, and the attenuation is very small, charging is also very easy to use the second is the formal magnetic wireless charger, such as Apple Watch, the security is still relatively high, but the speed can not be praised. After all, the coil will also lose power. The third is the crude magnetic charger made by a small factory. The example is the magnetic charger on the night. Let's not say whether this thing is safe, let's talk about it quickly. Personal experience tells you that the copper wire in this charging line is very thin, originally the most hot mobile phone when charging, and now use this line are hot, and very, very slow. In summary, it is recommended to buy a big name magnetic charger