Any recommendations for a socket that doesn't illuminate and has a USB-C port? Basically,
this without the glowing led.
I found
this one, but it
seems like a good idea to have at least one USB-C port in the van. Or would the QC3.0 paired with a cable that has USB-C on one end (what we use now) be just/almost as good?
It depends on what you're charging. If it's just a smartphone, cheaper QC 3.0 devices like the one you listed are fine.
But if you want to use and charge a laptop at the same time, while also charging other devices, then you need the higher power of PD 3.0 charger (assuming your laptop is new enough to support PD 3.0). A good PD charger will also have extra QC 3.0 ports.
I've had very good success with t
his device. A 10ft usb-c to usb-c cable goes to my Surface Pro for PD 3.0 charging, which I also use for my Galaxy S20+ (supports PD 3.0 and QC 3.0). Technically QC 3.0 would be slightly faster for my phone, but it's all so fast I don't mind the slight difference. Then a usb-a to usb-c cable charges my wireless earbuds via QC3.0, and another usb-a to usb-micro cable charges my older devices. Sometimes I use the usb-a to usb-c to charge my phone w/QC 3.0 while the usb-c to usb-c is charging the Surface w/PD 3.0. It all works great.
I power the device from a stable 13.8V DC converter (48 V > 13.8V powers all of my "12V" devices), and it's worked like a champ for years with that setup. I also wired a small on/off switch to it, so I can turn the device off completely when not in use for months at a time (winterizing). It only has a tiny green LED on it that's so small I don't even bother to cover it up when using the van, although I do have the device installed in a low position where it wouldn't bother me anyways. The long cables bring the power up to standing/sitting height.
It's possible it may not work as well with the varying voltages of the van's starter batter / alternator, although it's supposed to be designed to handle that. I only have a vague memory of a guy who claimed his friend had problems with one, but he offered no details on how his friend installed it. Lots of sketchy DIY electrical setups out there.
Cheers.