How does a laptop automatically charge a phone/ipad? If I connect the two, why doesn’t the phone charge the laptop instead?

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I have an iPhone, iPad, and a Mac and when I connect my phone or iPad to the Mac, it automatically starts charging. But why? Why not the other way around?

My thinking is that Mac’s have a bigger battery? But still what about that makes the Mac a charging source in the presence of an iPhone/ iPad?

In: Technology

5 Answers

Anonymous 0 Comments

Software in the power management of the phone forces the charging circuit to be one way. This means that the phones battery will only be able to receive a charge from the usb socket, and not go the other way.

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