| Sysop: | Amessyroom |
|---|---|
| Location: | Fayetteville, NC |
| Users: | 27 |
| Nodes: | 6 (0 / 6) |
| Uptime: | 38:25:12 |
| Calls: | 631 |
| Calls today: | 2 |
| Files: | 1,187 |
| D/L today: |
22 files (29,767K bytes) |
| Messages: | 173,684 |
I have bought a US specification USB-C charger for a trip to Canada.
Is there any reason - safety or otherwise - why I should not use the
USB-A to USB-C adapter that came with my Pixel phone to charge USB-A
devices such as Bluetooth speaker and Fitbit?
I have bought a US specification USB-C charger for a trip to Canada.
Is there any reason - safety or otherwise - why I should not use the
USB-A to USB-C adapter that came with my Pixel phone to charge USB-A
devices such as Bluetooth speaker and Fitbit?
I have bought a US specification USB-C charger for a trip to Canada.
Is there any reason - safety or otherwise - why I should not use the
USB-A to USB-C adapter that came with my Pixel phone to charge USB-A
devices such as Bluetooth speaker and Fitbit?
Scott <newsgroups@gefion.myzen.co.uk> wrote:
I have bought a US specification USB-C charger for a trip to Canada.
Is there any reason - safety or otherwise - why I should not use the
USB-A to USB-C adapter that came with my Pixel phone to charge USB-A
devices such as Bluetooth speaker and Fitbit?
A properly designed USB-C charger will only output 5V unless the connected >device enters into PD negotiations to increase the output voltage to some >other value. So itAs likely that your speaker and Fitbit will charge safely >at 5V.
USB-A doesnAt support PD. So the charger output should not increase in >voltage.
PD is a protocol where the device and charger conduct a negotiation about >their voltage and current capabilities. It is a standard that has replaced >the manufacturer proprietary methods used on USB-A.
If PD negotiation has not happened the charger should sit at 5V.
You have to be very careful where you source your chargers. ThereAs an
awful lot of rubbish on sale. This is worth a read:
https://www.raspberrypi.com/news/raspberry-pi-45w-usb-c-power-supply-on-sale-now-at-15/
Scott <newsgroups@gefion.myzen.co.uk> wrote:
I have bought a US specification USB-C charger for a trip to Canada.
Is there any reason - safety or otherwise - why I should not use the
USB-A to USB-C adapter that came with my Pixel phone to charge USB-A
devices such as Bluetooth speaker and Fitbit?
A properly designed USB-C charger will only output 5V unless the connected >device enters into PD negotiations to increase the output voltage to some >other value. So itrCOs likely that your speaker and Fitbit will charge safely >at 5V.
USB-A doesnrCOt support PD. So the charger output should not increase in >voltage.
PD is a protocol where the device and charger conduct a negotiation about >their voltage and current capabilities. It is a standard that has replaced >the manufacturer proprietary methods used on USB-A.
If PD negotiation has not happened the charger should sit at 5V.
You have to be very careful where you source your chargers. ThererCOs an >awful lot of rubbish on sale. This is worth a read:
https://www.raspberrypi.com/news/raspberry-pi-45w-usb-c-power-supply-on-sale-now-at-15/
On 11/05/2025 06:32, Tweed wrote:
Scott <newsgroups@gefion.myzen.co.uk> wrote:
I have bought a US specification USB-C charger for a trip to Canada.
Is there any reason - safety or otherwise - why I should not use the
USB-A to USB-C adapter that came with my Pixel phone to charge USB-A
devices such as Bluetooth speaker and Fitbit?
A properly designed USB-C charger will only output 5V unless the connected >> device enters into PD negotiations to increase the output voltage to some
other value. So itrCOs likely that your speaker and Fitbit will charge safely
at 5V.
USB-A doesnrCOt support PD. So the charger output should not increase in
voltage.
PD is a protocol where the device and charger conduct a negotiation about
their voltage and current capabilities. It is a standard that has replaced >> the manufacturer proprietary methods used on USB-A.
If PD negotiation has not happened the charger should sit at 5V.
You have to be very careful where you source your chargers. ThererCOs an
awful lot of rubbish on sale. This is worth a read:
https://www.raspberrypi.com/news/raspberry-pi-45w-usb-c-power-supply-on-sale-now-at-15/
I tend to assume that if it's sourced from a responsible retailer, and has Anker or Ugreen written on it, then it will be fine.
--
A PICKER OF UNCONSIDERED TRIFLES
Thank for this helpful advice. The charger is said to be genuine Apple (removed from the boxes of US imports). As an added precaution, I'll
take it into the Apple Store and ask them to check.
Scott <newsgroups@gefion.myzen.co.uk> wrote:
Thank for this helpful advice. The charger is said to be genuine Apple
(removed from the boxes of US imports). As an added precaution, I'll
take it into the Apple Store and ask them to check.
I'm not sure they're able to tell you whether a third party product is genuine or not (they are not skilled in the arts of telling whether the writing that's supposed to be dark grey is in fact black, and similar sorts of things used to tell them apart). For one thing they wouldn't want the liability if they called it the wrong way.
However I don't think it really matters. It should be able to charge your smaller 5V-only devices with no problems. Counterfeits can have some issues with electrical isolation but if you treat it with caution (don't touch the output) you are very likely to be ok. If you got it from a reliable source (not ebay or Amazon) then I wouldn't worry too much about it.
Theo
Thank for this helpful advice. The charger is said to be genuine Apple (removed from the boxes of US imports). As an added precaution, I'll
take it into the Apple Store and ask them to check.
I have bought a US specification USB-C charger for a trip to Canada.
On 11/05/2025 10:04, Scott wrote:
Thank for this helpful advice. The charger is said to be genuine Apple
(removed from the boxes of US imports). As an added precaution, I'll
take it into the Apple Store and ask them to check.
It is not Apple but has a Apple logo on it then they might confiscate it?
I have bought a US specification USB-C charger for a trip to Canada.
Is there any reason - safety or otherwise - why I should not use the
USB-A to USB-C adapter that came with my Pixel phone to charge USB-A
devices such as Bluetooth speaker and Fitbit?
Jason H <jason_hindle@yahoo.com> wrote:
On 11/05/2025 06:32, Tweed wrote:The trouble is those brands are only sold via Amazon as far as I know.
Scott <newsgroups@gefion.myzen.co.uk> wrote:
I have bought a US specification USB-C charger for a trip to Canada.A properly designed USB-C charger will only output 5V unless the
Is there any reason - safety or otherwise - why I should not use the
USB-A to USB-C adapter that came with my Pixel phone to charge USB-A
devices such as Bluetooth speaker and Fitbit?
connected device enters into PD negotiations to increase the output
voltage to some other value. So itrCOs likely that your speaker and
Fitbit will charge safely at 5V.
USB-A doesnrCOt support PD. So the charger output should not increase in >>> voltage.
PD is a protocol where the device and charger conduct a negotiation
about their voltage and current capabilities. It is a standard that
has replaced the manufacturer proprietary methods used on USB-A.
If PD negotiation has not happened the charger should sit at 5V.
You have to be very careful where you source your chargers. ThererCOs an >>> awful lot of rubbish on sale. This is worth a read:
https://www.raspberrypi.com/news/raspberry-pi-45w-usb-c-power-supply- on-sale-now-at-15/
I tend to assume that if it's sourced from a responsible retailer, and
has Anker or Ugreen written on it, then it will be fine.
--
A PICKER OF UNCONSIDERED TRIFLES
I just take my decent quality UK chargers with me, with the appropriate adapter. (In fact IrCOve been known to take a UK 4 way strip and an adapter for just the one plug. Then you can connect more than one thing). Pretty
much every high quality adapter will run from 100 to 250V, 50 or 60 Hz.
There's something to be said for having a UK 4 way strip and replacing the plug with the local version. Then you have an N-way adapter and a full size plug that fits correctly, not the awkwardly fitting ones travel adapters often are.
Scott <newsgroups@gefion.myzen.co.uk> wrote:
Thank for this helpful advice. The charger is said to be genuine Apple
(removed from the boxes of US imports). As an added precaution, I'll
take it into the Apple Store and ask them to check.
I'm not sure they're able to tell you whether a third party product is >genuine or not (they are not skilled in the arts of telling whether the >writing that's supposed to be dark grey is in fact black, and similar sorts >of things used to tell them apart). For one thing they wouldn't want the >liability if they called it the wrong way.
However I don't think it really matters. It should be able to charge your >smaller 5V-only devices with no problems. Counterfeits can have some issues >with electrical isolation but if you treat it with caution (don't touch the >output) you are very likely to be ok. If you got it from a reliable source >(not ebay or Amazon) then I wouldn't worry too much about it.
On 11/05/2025 10:04, Scott wrote:
Thank for this helpful advice. The charger is said to be genuine Apple
(removed from the boxes of US imports). As an added precaution, I'll
take it into the Apple Store and ask them to check.
It is not Apple but has a Apple logo on it then they might confiscate it?
On 11/05/2025 13:02, Theo wrote:
There's something to be said for having a UK 4 way strip and replacing the >> plug with the local version. Then you have an N-way adapter and a full size >> plug that fits correctly, not the awkwardly fitting ones travel adapters
often are.
I thought he was referring to a 4-way USB strip?
I have bought a US specification USB-C charger for a trip to Canada.
Is there any reason - safety or otherwise - why I should not use the
USB-A to USB-C adapter that came with my Pixel phone to charge USB-A
devices such as Bluetooth speaker and Fitbit?
On 10/05/2025 20:26, Scott wrote:
I have bought a US specification USB-C charger for a trip to Canada.
Is there any reason - safety or otherwise - why I should not use the
USB-A to USB-C adapter that came with my Pixel phone to charge USB-A
devices such as Bluetooth speaker and Fitbit?
What do you mean by a *US specification* USB-C charger?
In my experience these chargers work worldwide. You just need an
appropriate plug adapter or (if its detachable) mains lead/plug.
On 12/05/2025 15:48, MikeS wrote:
On 10/05/2025 20:26, Scott wrote:
I have bought a US specification USB-C charger for a trip to Canada.
Is there any reason - safety or otherwise - why I should not use the
USB-A to USB-C adapter that came with my Pixel phone to charge USB-A
devices such as Bluetooth speaker and Fitbit?
What do you mean by a *US specification* USB-C charger?
In my experience these chargers work worldwide. You just need an
appropriate plug adapter or (if its detachable) mains lead/plug.
I assume he means one with two flat pins. They take up less space when >travelling. I have one as one of my shavers uses a USB charge lead, and
the US style one does not fall out of the bathroom socket.
.. and as you say its universal works on most mains voltages and frequencies--- Synchronet 3.21a-Linux NewsLink 1.2
Dave
I have bought a US specification USB-C charger for a trip to Canada.
Is there any reason - safety or otherwise - why I should not use the
USB-A to USB-C adapter that came with my Pixel phone to charge USB-A
devices such as Bluetooth speaker and Fitbit?
A properly designed USB-C charger will only output 5V unless the connected device enters into PD negotiations to increase the output voltage to some other value. So itrCOs likely that your speaker and Fitbit will charge safely at 5V.
USB-A doesnrCOt support PD. So the charger output should not increase in voltage.
PD is a protocol where the device and charger conduct a negotiation about their voltage and current capabilities. It is a standard that has replaced the manufacturer proprietary methods used on USB-A.
If PD negotiation has not happened the charger should sit at 5V.
On 11/05/2025 06:32, Tweed wrote:
A properly designed USB-C charger will only output 5V unless the connected >> device enters into PD negotiations to increase the output voltage to some
other value. So itrCOs likely that your speaker and Fitbit will charge safely
at 5V.
USB-A doesnrCOt support PD. So the charger output should not increase in
voltage.
PD is a protocol where the device and charger conduct a negotiation about
their voltage and current capabilities. It is a standard that has replaced >> the manufacturer proprietary methods used on USB-A.
If PD negotiation has not happened the charger should sit at 5V.
Or at zero volts. Some USB-C chargers do not output anything unless they
see something that meets USB-PD specs is there, an adapter may, or may
not, meet the spec, it just depends on how thorough the manufacturer was.
On 10/05/2025 20:26, Scott wrote:
I have bought a US specification USB-C charger for a trip to Canada.
Is there any reason - safety or otherwise - why I should not use the
USB-A to USB-C adapter that came with my Pixel phone to charge USB-A
devices such as Bluetooth speaker and Fitbit?
The only way to know for sure it to try it.
It can't do any harm, it'll either work correctly, or not work at all.
I have bought a US specification USB-C charger for a trip to Canada.
Is there any reason - safety or otherwise - why I should not use the
USB-A to USB-C adapter that came with my Pixel phone to charge USB-A
devices such as Bluetooth speaker and Fitbit?
ThatrCOs a bit chicken and egg. If the equipment, eg phone, has a discharged battery it canrCOt enter into PD negotiations unless the charger provides it with some power.No. Part of the PD spec is that just placing certain resistors on the
On 22/05/2025 17:05, Tweed wrote:
ThatrCOs a bit chicken and egg. If the equipment, eg phone, has a discharged >> battery it canrCOt enter into PD negotiations unless the charger provides it >> with some power.No. Part of the PD spec is that just placing certain resistors on the
two pins that carry the PD negotiation in the USB-C connector will make
the source output 5V power.
Brian Gregory <void-invalid-dead-dontuse@email.invalid> wrote:
On 22/05/2025 17:05, Tweed wrote:
ThatrCOs a bit chicken and egg. If the equipment, eg phone, has a dischargedNo. Part of the PD spec is that just placing certain resistors on the
battery it canrCOt enter into PD negotiations unless the charger provides it
with some power.
two pins that carry the PD negotiation in the USB-C connector will make the source output 5V power.
My understanding is that those resistors are to allow higher currents at 5V to be requested. Without them 5V at 500mA should be provided, as per the earliest version of USB.
It's very difficult to 'provide' a specific current at a given
voltage, it needs a 'consumer' to take more than 500mA if it's
available. A source can limit the current to a maximum but it can't
really provide more unless the consuming device increases its
consumption.
So the current might be limited to 500mA at 5v **unless** those
resistors are present but it's down to the consuming device to take
more than 500mA if it's available.
In reality I doubt if the resistors change the current availability,
they almost certainly negotiate different voltages.
Scott <newsgroups@gefion.myzen.co.uk> wrote:
Thank for this helpful advice. The charger is said to be genuine Apple
(removed from the boxes of US imports). As an added precaution, I'll
take it into the Apple Store and ask them to check.
I'm not sure they're able to tell you whether a third party product is >genuine or not (they are not skilled in the arts of telling whether the >writing that's supposed to be dark grey is in fact black, and similar sorts >of things used to tell them apart). For one thing they wouldn't want the >liability if they called it the wrong way.
Brian Gregory <void-invalid-dead-dontuse@email.invalid> wrote:
On 22/05/2025 17:05, Tweed wrote:
ThatrCOs a bit chicken and egg. If the equipment, eg phone, has a dischargedNo. Part of the PD spec is that just placing certain resistors on the
battery it canrCOt enter into PD negotiations unless the charger provides it
with some power.
two pins that carry the PD negotiation in the USB-C connector will make
the source output 5V power.
My understanding is that those resistors are to allow higher currents at 5V to be requested. Without them 5V at 500mA should be provided, as per the earliest version of USB.
On 28/05/2025 06:59, Tweed wrote:
Brian Gregory <void-invalid-dead-dontuse@email.invalid> wrote:
On 22/05/2025 17:05, Tweed wrote:
ThatrCOs a bit chicken and egg. If the equipment, eg phone, has a dischargedNo. Part of the PD spec is that just placing certain resistors on the
battery it canrCOt enter into PD negotiations unless the charger provides it
with some power.
two pins that carry the PD negotiation in the USB-C connector will make
the source output 5V power.
My understanding is that those resistors are to allow higher currents at 5V >> to be requested. Without them 5V at 500mA should be provided, as per the
earliest version of USB.
That's not my understanding of how it works, at least in some cases,
with USB-C.
I don't think the pins in question even existed on earlier versions of USB.
Jason H <jason_hindle@yahoo.com> wrote:
I tend to assume that if it's sourced from a responsible retailer, and has >> Anker or Ugreen written on it, then it will be fine.
--
A PICKER OF UNCONSIDERED TRIFLES
The trouble is those brands are only sold via Amazon as far as I know.