The Lightning port has four pairs of eight contacts, of which only one is used for power

The Lightning port has four pairs of eight contacts, of which only one is used for power

Lightning interface has 4 pairs of 8 contacts, among which only 1 pair is used for power supply. The maximum current it can withstand is 2.4A. Although the highest current of 3A was measured on iPhone 13 Pro Max by foreign media before, it should be realized after official "magic modification", and this is the limit. Its highest charging power is about 30W.

It is possible to increase the charging voltage from 9V to 15V in theory, but it is also difficult in practice. With the current iPhone design, it is not feasible to increase the charging voltage, and the security risks will be very big, so Apple is unlikely to try.

On the other hand, 5 out of 12 pairs of contacts on the Type-C side can be powered by electric shock, so it can naturally withstand more current, and it is easier to increase the charging power.

Believe some friend may have a little confused, it from a cable is on both sides to have 4 of contact, which is 16, why interface was eight, you can take a closer look at the interface, in fact, only one side has the contact, so is only 4 pairs, as to why cable has two sides, so didn't can be positive and negative, So when we're charging, half of the contacts on the line are actually resting.

The conclusion is simple: Lightning is so far behind, and the limits are there, and Apple is flat on its back.