Hey! I'm planning on buying two LG 27UK670 monitors, that can supply 40 watts of power through usb-c. As I will purchase two to replace my current ones, is it possible to charge my MacBook Pro 2017, 15 inch through both of these connections, for a total of 80 watts distributed over two connectors?
Many thanks!
MacBook Pro with Touch Bar
To charge at higher than about 1 Amp rate used for simple devices like iPhones, a complex negotiation takes place to agree on the Voltage and Current to be supplied.
I doubt your Mac will negotiate with more than one device, and even if it did, I expect it could not deal with high charging rates from multiple devices. Electrically, this is really very tricky to do successfully.
That is what all the fancy negotiating is all about. There is no chance of frying things, but whether it will actually agree and charge is another matter.
And if I plug in both displays, would it just charge from one, so 40 watt or will I have to connect my 87 watt power adapter and somehow not charge from these displays at all?
I believe you will shortly be the world's expert on this issue.
There have been no reports of Users results in attempting a similar charging situation.
I will report on the matter when I buy the displays. Any chance of me totally frying my laptop because it has 3 power sources connected?
That is what all the fancy negotiating is all about. They negotiate so that you will NOT fry anything.
Charge MacBook from 2 40 watt sources
