5 ms·

Would be nice if this was extended to almost all products, using PD instead of the 5W. I have 20 different barrel plug wall warts in a crate used for 20 differ

Would be nice if this was extended to almost all products, using PD instead of the 5W. I have 20 different barrel plug wall warts in a crate used for 20 different routers, switches, and other misc DC-powered products.

transpute 2y ago
Fixed voltage PD-to-barrel cables help fill the gap.
- vvanders 2y ago
  If your voltage matches one of the PD levels they work okay but many common voltages like 12v usually end up being very charger dependent. I've got one of the 12v pd triggers that on 9/10 of the PD enabled charges I've used just drops to 9v.
  - transpute 2y ago
    For auditing real-world behavior, some USB-c cables (and interposers) have tiny displays to report live voltage/current.
- semi-extrinsic 2y ago
  Wow, TIL, thank you! I had thought briefly that something like this should exist, but then dismissed the thought, since such devices would be too much to hope for in the current environment of corporate enshittification. Slight amount of faith in humanity restored.
  - TeMPOraL 2y ago
    TBH, wall warts with voltage selector and 10+ detachable types of barrel connectors predate corporate enshittification, which is probably what makes PD variant possible.
  - numpad0 2y ago
    Fun-busting fact: 12V output was removed from USB-PD spec at some point, and not every chargers support it.
    - deleted 2y ago
      [deleted]
    - wolrah 2y ago
      Yes, the USB Power Delivery 2.0 spec traded the 12 volt level for 9 and 15 volt levels, so not all PD 2.0 capable chargers support 12v output as there are very few devices that actually natively use PD 1.0 12v mode. Almost all devices requesting it are so-called "trigger" devices used to adapt older equipment to run on USB power. I have a fun-restoring fact for you though: USB PD 3.0 in 2018 added a feature called Programmable Power Supply which allows a device being powered to request any voltage from 3.3 to 21 volts in 20mV increments. As support for this feature is required for a product to carry the "Certified USB Fast Charger" logo it's pretty much standard on any decent charger. I have yet to encounter a single PPS-capable charger that didn't also support the fixed 12v mode.
  - pantalaimon 2y ago
    There is also the reverse [0] for turning an old notebook charger into a USB-C one [0] https://aliexpress.com/item/1005006000000778.html https://aliexpress.com/item/1005006000000778.html
    - avidiax 2y ago
      Unfortunately, Aliexpress links go dead quickly. Perhaps you mean something like these: https://www.aliexpress.us/item/3256806952052632.html https://www.aliexpress.us/item/3256806952052632.html https://www.aliexpress.us/item/3256806950028548.html https://www.aliexpress.us/item/3256806950028548.html I'd be interested to know if they can really up/down convert voltage as appropriate for USB-C.
dtgriscom 2y ago
How long would it take to charge a Tesla over USB-C?
- cmbuck 2y ago
  Assuming a 50kWh Tesla Model 3 charging via USB C PD 3.1 EPR 240W, it would take around ~104hrs (4.3 days) to increase battery SoC by 50%.
  - xethos 2y ago
    Considering how frequently my fiancee and I drive, 10% per day of the base model's ~400km range would actually be enough
  - oatmeal_croc 2y ago
    That's not entirely true - the Tesla has a few hundred watts of overhead when charging - so a 240 W charger would probably not get over that hill. You could maybe keep the screen on and watch a movie while connected via USB-C.
plagiarist 2y ago
I agree. I have decided to just never buy another thing that cannot be powered by Type C or C13/14. Maybe exceptions for PoE, I guess, if I had to use an ethernet cable on it anyway.
- mark-r 2y ago
  Sounds like a product idea, an ethernet cable with a USB C jack to tap the power.
lmpdev 2y ago
Unless I’m missing something, all of those are consumer electronic devices under 100W and are now obliged to be power-able by USB-C in the EU This legislation wasn’t primarily trying to kill Lightning, it was trying to kill the 2.1mm DC barrel jack
- foxglacier 2y ago
  No because they're not portable, don't use it for charging, and are not included in the list of devices that it applies to. Even a cordless phone is not considered portable because you can't use it very far from the base station.

transpute 2y ago

Fixed voltage PD-to-barrel cables help fill the gap.

vvanders 2y ago
If your voltage matches one of the PD levels they work okay but many common voltages like 12v usually end up being very charger dependent. I've got one of the 12v pd triggers that on 9/10 of the PD enabled charges I've used just drops to 9v.
- transpute 2y ago
  For auditing real-world behavior, some USB-c cables (and interposers) have tiny displays to report live voltage/current.
semi-extrinsic 2y ago
Wow, TIL, thank you! I had thought briefly that something like this should exist, but then dismissed the thought, since such devices would be too much to hope for in the current environment of corporate enshittification. Slight amount of faith in humanity restored.
- TeMPOraL 2y ago
  TBH, wall warts with voltage selector and 10+ detachable types of barrel connectors predate corporate enshittification, which is probably what makes PD variant possible.
- numpad0 2y ago
  Fun-busting fact: 12V output was removed from USB-PD spec at some point, and not every chargers support it.
  - deleted 2y ago
    [deleted]
  - wolrah 2y ago
    Yes, the USB Power Delivery 2.0 spec traded the 12 volt level for 9 and 15 volt levels, so not all PD 2.0 capable chargers support 12v output as there are very few devices that actually natively use PD 1.0 12v mode. Almost all devices requesting it are so-called "trigger" devices used to adapt older equipment to run on USB power. I have a fun-restoring fact for you though: USB PD 3.0 in 2018 added a feature called Programmable Power Supply which allows a device being powered to request any voltage from 3.3 to 21 volts in 20mV increments. As support for this feature is required for a product to carry the "Certified USB Fast Charger" logo it's pretty much standard on any decent charger. I have yet to encounter a single PPS-capable charger that didn't also support the fixed 12v mode.
- pantalaimon 2y ago
  There is also the reverse [0] for turning an old notebook charger into a USB-C one [0] https://aliexpress.com/item/1005006000000778.html https://aliexpress.com/item/1005006000000778.html
  - avidiax 2y ago
    Unfortunately, Aliexpress links go dead quickly. Perhaps you mean something like these: https://www.aliexpress.us/item/3256806952052632.html https://www.aliexpress.us/item/3256806952052632.html https://www.aliexpress.us/item/3256806950028548.html https://www.aliexpress.us/item/3256806950028548.html I'd be interested to know if they can really up/down convert voltage as appropriate for USB-C.

dtgriscom 2y ago

How long would it take to charge a Tesla over USB-C?

cmbuck 2y ago
Assuming a 50kWh Tesla Model 3 charging via USB C PD 3.1 EPR 240W, it would take around ~104hrs (4.3 days) to increase battery SoC by 50%.
- xethos 2y ago
  Considering how frequently my fiancee and I drive, 10% per day of the base model's ~400km range would actually be enough
- oatmeal_croc 2y ago
  That's not entirely true - the Tesla has a few hundred watts of overhead when charging - so a 240 W charger would probably not get over that hill. You could maybe keep the screen on and watch a movie while connected via USB-C.

plagiarist 2y ago

I agree. I have decided to just never buy another thing that cannot be powered by Type C or C13/14. Maybe exceptions for PoE, I guess, if I had to use an ethernet cable on it anyway.

mark-r 2y ago
Sounds like a product idea, an ethernet cable with a USB C jack to tap the power.

lmpdev 2y ago

Unless I’m missing something, all of those are consumer electronic devices under 100W and are now obliged to be power-able by USB-C in the EU This legislation wasn’t primarily trying to kill Lightning, it was trying to kill the 2.1mm DC barrel jack

foxglacier 2y ago
No because they're not portable, don't use it for charging, and are not included in the list of devices that it applies to. Even a cordless phone is not considered portable because you can't use it very far from the base station.