Quote:
|
But there are multiple specs. No-one is enforcing use of just one spec. Also the millions of devices out there.
|
There is one spec from the USB-IF: USB Power Delivery. USB PD has a series of power profiles:
Up to 60W: 5V/9V/15V/20V at up to 3 Amps. This profile subsumes legacy USB power including the formerly ubiquitous 5V at 0.5A.
Above 60W to 100W: 20V at up to 5 Amps.
Above 100W to 240W: 28V/36V/48V at up to 5 Amps.
Quote:
|
So you need 2 or 3 chargers when you travel?
|
No. I need one though technically two:
My 75W 5-port (3-port is a mistake) travel adapter has two USB-A and three USB-C power ports. I can charge my iPhone (20W), my iPad (30W), my Kobo (2.5W) simultaneously. I can run and charge my Steam Deck (45W) but I need to disconnect the iPad. A previous notebook of mine draws 60W USB PD and can run from this adapter though with little else. I also have a pocket-sized travel router (think Raspberry Pi firewall box) (15W). Also my watch charging puck. That's seven devices powered by one travel adapter though not simultaneously.
My current notebook draws 100W USB PD so I need a separate power supply for it.
I also have a 100W power bank with two USB-A and two USB-C power ports. It can simultaneously power and charge up to four devices up to a total of 100W. It automatically switches each port to match the power draw.
I don't travel with the Steam Deck but everything else goes into the tech bag with the two power supplies and bank, USB cables, and a compact power strip with a 1 meter cord because hotel power outlets can be inconveniently located.
Quote:
|
Why is it that USB-C devices can be all over the place and also non-standard? (rant, rant)
|
Very few are so badly off spec that it's a problem, Nintendo Switch being one of the most egregious, but add your not-USB-C cable to that short list.