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Comment on USB-C PSU is 9v *only*. Is that compliant? Did a PD-compliant charger fry my gear?

NeatNit@discuss.tchncs.de ⁨2⁩ ⁨days⁩ ago

That sounds horrible. You’re right about everything.

It sounds like they wanted to just use a 9V input with no USB circuitry, but they slapped on a USB-C connector on it because e.g. European regulators require all rechargeable devices to use USB-C. But obviously that’s not compliant, not with USB specs and not with the regulations.

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adlerweb@social.adlerweb.info ⁨2⁩ ⁨days⁩ ago
@NeatNit @evenwicht Not unusual. Cheap devices like these light do not conform to the USB spec and are missing 2 resistors signaling the power demand. USB-C chargers won't work in this case, as they only output voltage, if they detect a device. You need a USB-A charger with a A-to-C-cable. Yes, it sucks, but the seller saved 0.2 Cents during production :/.
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- evenwicht@lemmy.sdf.org ⁨2⁩ ⁨days⁩ ago
  
  USB-C chargers won’t work in this case, as they only output voltage, if they detect a device.
  
  Note that the first 2 times I attached a universal USB-C charger to the radio, it gave a charging animation (though after ~30-45 min wait). So I am struggling to work out how that happened. Did the charger give up after waiting a long time and say “fuck it, will give some arbitrary power”?
  
  You need a USB-A charger with a A-to-C-cable.
  
  My universal charger has both USB-A and USB-C ports. I tried the USB-C port first (thus usb-c→usb-c). Then at one point I tried usb-a→usb-c. I was expecting usb-A to behave the same because the charger specifies the same range of voltages for both ports. The only difference is the max current is a little higher on the usb-c.
  
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