5 ms·

Pi 5 unfortunately needs a non-standard charger. It requires 5v & 5A charger. Its been difficult to acquire one in India.

0x1ceb00da 3y ago
Why don't they package/sell one with the rpi? It isn't an optional peripheral.
- ssl-3 3y ago
  It is optional, though. The Raspberry Pi 5 does support USB-PD. There aren't very presently very many USB-PD chargers that support the 5A@5V mode that it prefers, but they do exist. And like what happened with the Raspberry Pi 3s and 4s (which also had somewhat peculiar power desires and also did not include a power supply), additional third parties will come forward to produce their own versions of Raspberry Pi 5 power supply. (It's only natural, and history supports this happening.) But even on a desert island: It can be powered through the GPIO header just like all other previous versions, if that's what you want to do. Just put a reasonably-stable 5V supply on there that can output 5A, and power it up. No big deal. Also like with previous Pis: A person is also free to goof around with using whatever USB bricks they have laying around. Might work, might not -- but it's a device that is intended to be a learning tool. Or: Buy a kit from a kit-maker like Vilross or something, if you need accessories included all in one box. (At any rate: Raspberry Pis have always just been bare boards, not complete systems.)
  - newsclues 3y ago
    "(At any rate: Raspberry Pis have always just been bare boards, not complete systems.)" https://www.raspberrypi.com/products/raspberry-pi-400/ https://www.raspberrypi.com/products/raspberry-pi-400/
    - ssl-3 3y ago
      https://www.raspberrypi.com/products/raspberry-pi-400-unit/ https://www.raspberrypi.com/products/raspberry-pi-400-unit/
      - jacquesm 3y ago
        Someone even hacked these to 8G but that required reballing a 200 pad chip.
        ssl-3 3y ago
        I've read about that. The most difficult soldering I've ever done was swapping an ATMega 2560 chip between two boards with a very basic hot air station, and that one still doesn't work right (but it works well enough to be useful). Hacks like this are very impressive.
        jacquesm 3y ago
        The QFP or the BGA version? Either way, that's already pretty impressive to me, I probably couldn't do it. The best I've done so far on that front is fixing a board that had a layout error which caused the pads of a USB connector to be offset by bridging the gap with individual strands of copper. I also hope to never have to do something like that again :)
Mashimo 3y ago
AFAIK it still works with lower A charger, but it will not boost all the way. And still be faster than Pi4. Is that not the case?
- girishso 3y ago
  Running with iPhone/Mac charger.. the desktop shows notification about “Power supply not supporting 5A” and runs Ok until I try to play a video on YouTube, then it simply reboots. And yes it’s nearly impossible to find 5v5a power supply in India.
  - phonon 3y ago
    Are you sure the one you are using supports 15 Watts (5V3A)? Apple has a 12 W charger....
    - girishso 3y ago
      Yes I'm using Apple iPhone 20W USB C charger. Guess it's 9 VDC/2.2 A.
rex_lupi 3y ago
Maybe an inline buck coverter w/ a 9v/12v quickcharge adapter would help?
diffeomorphism 3y ago
Nah, it wants one, but it is not needed. It works just fine with a standard charger, mouse, keyboard etc. .
Hamuko 3y ago
Does it not accept standard USB-PD?
- ssl-3 3y ago
  It does support USB-PD. It just doesn't do it in a way that many USB-PD power supplies work with. Whereas lots of USB-PD devices (at each end) will negotiate higher voltages in order to accomplish greater power delivery, the Pi 5 only ever wants 5V -- not 9V, not 12V, 15V, not 20V, and not PPS. Ideally, it wants up to 5A of 5V.[1] And many (I dare say "most," or "nearly all") USB-PD power supplies top out at 3A when in 5V mode. Also: Getting 5A of USB-PD also requires a special e-marked cable because that's getting into the realm of current flow where things can get melty. A dumb cable will never be expected to transmit 5A of current with a USB-PD device at each end. --- The Pi 5 still can still work even if it can't detect that it is running from a 5 Amp-capable supply, though. It may be slower (due to detected voltage sags), and there will be less power available for USB devices attached to the Pi (which can be toggled in config.txt). But it can work. It can also be powered through the GPIO header, just as other models in the past: Nothing prevents those who think they know what they're doing from using whatever they have laying around that they think is adequate, and just powering the device up in full capacity.[2] [1] https://www.raspberrypi.com/documentation/computers/raspberry-pi-5.html#powering-raspberry-pi-5 https://www.raspberrypi.com/documentation/computers/raspberr... [2] https://forums.raspberrypi.com/viewtopic.php?t=358008 https://forums.raspberrypi.com/viewtopic.php?t=358008
  - sschueller 3y ago
    Isn't more than 3A at 5V out of USB-PD 2 and 3 spec? You can set max 3A amp for USB PD with just placing a 5.1k resistor on each USB CC line without the need for a USB PD IC. If you need more you would need to request for example 20V at 5A and then buck convert it down to 5V. Not ideal but you can at least pull the current you need through thinner cables and you also have enough to power external USB devices.
    - Kirby64 3y ago
      The “normal” way to support 25W would be to support 9V 3A input, giving 27W adapters functionality. Or possibly accept multiple options such as 9, 12, and 15, and then buck any of those down to the system voltage needed. The 5V5A is because raspberry pi org is being cheap/lazy and doesn’t want to design or pay for a power converter to handle that on the pi, and instead is pushing that complexity/cost to the user via an overpriced and nonstandard supply.
kelvie 3y ago
Wow, that's rough. I use a set of raspberry pi 4Bs as a k8s cluster (with an SSD over USB, otherwise etcd crashes cause the storage is too slow). Luckily I have 5 of them (and a k8s cluster is fault tolerant), because the USB disk randomly does not get enough power -- the voltage drops a lot even pulling 2-3A out of most chargers, I can't imagine doing 5 (the USB cable resistances start to become a factor at higher amperages).
- eurekin 3y ago
  Hi! How's that working for you? I have a similar cluster, but for CEPH specifically and I couldn't bear the hassle (supposedly hassless updates stuck, until I cleaned up some dirs as a root etc.)
  - kelvie 3y ago
    It's been working fine. I have the pi's set up to reboot on disk failures, which fixes 99% of the problems (looking at the up time, ony node still reboots once ever 3 weeks or so), and the pods just get migrated, it's not a huge deal. I use longhorn though, not CEPH, and it's been relatively painless.
- ajsnigrutin 3y ago
  If you have a cluster, why not just buy a single decent power supply for everything? You can even find good quality ones even on aliexpress, like meanwell lrs-350 (5V, 60A output) for ~$40 on aliexpress and a bit more locally. (not afilliated, just use them a lot for 12v systems)
  - HankB99 3y ago
    In some situations power delivery to the Pi is not the issue. It is power delivery from USB to the SSD. I ran into this myself and it was weird. * When the Pi 4B first came out, I connected a cheap Inland (Microcenter house brand) SSD, booting from that, and it ran fine for a while. (Months?) "Better" SSDs like Crucial MX100 had problems under heavy load and I suspected that the instantaneous power demands of the SSD were not met by the USB port on the Pi. (The Pi 4B supports UAS and older Pis did not and the older ones never had problems with USB connected SSDs.) * At some point it started to run into difficulties with the SSD disconnecting under heavy load, requiring a power cycle to restore operation. At that point I began using a powered USB hub to work around this. * Recently a user on some forum (which I have forgotten) suggested that one particular SSD model from Kingston worked fine w/out the need for a powered hub. I acquired one and tested [1] and found this to be true. Just for grins, I also tested some other SSDs that had previously only worked with a powered hub and they worked fine when directly connected. This leads me to believe that the RpiOS folk have been tweaking some settings in the "firmware" [2] that have modified the power delivery from the USB ports. [1] Testing involved running several disk benchmarks as well as 'stress-ng' to load the storage as much as possible. [2] I'm unclear what the Rpi folk mean by "firmware". As an embedded systems developer "firmware" is something written to non-volatile solid state storage like flash or eeprom but when I updated firmware on a Pi, it installed a new kernel too.
arnavpraneet 3y ago
same, there is no charger available anywhere, for my Pi V
zakki 3y ago
Maybe you can find 5V5A adaptor easier than charger. You may need to buy the compatible cable from adaptor to rpi5.
sschueller 3y ago
As far as I know more than 3A at 5V is out of USB spec and should require the use of USB-PD negotiating 20V or so at 5A and then buck convert that down to 5V.
- Denvercoder9 3y ago
  USB-PD rev 3.1 supports 5A at 5V with electronically marked cables. It's not a requirement to support it, and it's rare to find in the wild, but it's within the spec.
teamonkey 3y ago
It needs a 5V 3A charger. It throttles the max power delivery of the USB ports unless you use a 5V 5A power supply.
kristianp 3y ago
There's an official power supply, there are Indian suppliers listed: https://www.raspberrypi.com/products/27w-power-supply/ https://www.raspberrypi.com/products/27w-power-supply/ Or you can google "raspberry Pi 5 power supply".
kotaKat 3y ago
I love the Pi Foundation's weird cabal of doing things the non-standard way like throwing things like 5V5A or Micro HDMI. Makes things so much more convenient when you have to stop everything to hunt for the right dongle or power adapter and can't just use-what-you-have :)

0x1ceb00da 3y ago

Why don't they package/sell one with the rpi? It isn't an optional peripheral.

ssl-3 3y ago
It is optional, though. The Raspberry Pi 5 does support USB-PD. There aren't very presently very many USB-PD chargers that support the 5A@5V mode that it prefers, but they do exist. And like what happened with the Raspberry Pi 3s and 4s (which also had somewhat peculiar power desires and also did not include a power supply), additional third parties will come forward to produce their own versions of Raspberry Pi 5 power supply. (It's only natural, and history supports this happening.) But even on a desert island: It can be powered through the GPIO header just like all other previous versions, if that's what you want to do. Just put a reasonably-stable 5V supply on there that can output 5A, and power it up. No big deal. Also like with previous Pis: A person is also free to goof around with using whatever USB bricks they have laying around. Might work, might not -- but it's a device that is intended to be a learning tool. Or: Buy a kit from a kit-maker like Vilross or something, if you need accessories included all in one box. (At any rate: Raspberry Pis have always just been bare boards, not complete systems.)
- newsclues 3y ago
  "(At any rate: Raspberry Pis have always just been bare boards, not complete systems.)" https://www.raspberrypi.com/products/raspberry-pi-400/ https://www.raspberrypi.com/products/raspberry-pi-400/
  - ssl-3 3y ago
    https://www.raspberrypi.com/products/raspberry-pi-400-unit/ https://www.raspberrypi.com/products/raspberry-pi-400-unit/
    - jacquesm 3y ago
      Someone even hacked these to 8G but that required reballing a 200 pad chip.
      - ssl-3 3y ago
        I've read about that. The most difficult soldering I've ever done was swapping an ATMega 2560 chip between two boards with a very basic hot air station, and that one still doesn't work right (but it works well enough to be useful). Hacks like this are very impressive.
        jacquesm 3y ago
        The QFP or the BGA version? Either way, that's already pretty impressive to me, I probably couldn't do it. The best I've done so far on that front is fixing a board that had a layout error which caused the pads of a USB connector to be offset by bridging the gap with individual strands of copper. I also hope to never have to do something like that again :)

Mashimo 3y ago

AFAIK it still works with lower A charger, but it will not boost all the way. And still be faster than Pi4. Is that not the case?

girishso 3y ago
Running with iPhone/Mac charger.. the desktop shows notification about “Power supply not supporting 5A” and runs Ok until I try to play a video on YouTube, then it simply reboots. And yes it’s nearly impossible to find 5v5a power supply in India.
- phonon 3y ago
  Are you sure the one you are using supports 15 Watts (5V3A)? Apple has a 12 W charger....
  - girishso 3y ago
    Yes I'm using Apple iPhone 20W USB C charger. Guess it's 9 VDC/2.2 A.

rex_lupi 3y ago

Maybe an inline buck coverter w/ a 9v/12v quickcharge adapter would help?

diffeomorphism 3y ago

Nah, it wants one, but it is not needed. It works just fine with a standard charger, mouse, keyboard etc. .

Hamuko 3y ago

Does it not accept standard USB-PD?

ssl-3 3y ago
It does support USB-PD. It just doesn't do it in a way that many USB-PD power supplies work with. Whereas lots of USB-PD devices (at each end) will negotiate higher voltages in order to accomplish greater power delivery, the Pi 5 only ever wants 5V -- not 9V, not 12V, 15V, not 20V, and not PPS. Ideally, it wants up to 5A of 5V.[1] And many (I dare say "most," or "nearly all") USB-PD power supplies top out at 3A when in 5V mode. Also: Getting 5A of USB-PD also requires a special e-marked cable because that's getting into the realm of current flow where things can get melty. A dumb cable will never be expected to transmit 5A of current with a USB-PD device at each end. --- The Pi 5 still can still work even if it can't detect that it is running from a 5 Amp-capable supply, though. It may be slower (due to detected voltage sags), and there will be less power available for USB devices attached to the Pi (which can be toggled in config.txt). But it can work. It can also be powered through the GPIO header, just as other models in the past: Nothing prevents those who think they know what they're doing from using whatever they have laying around that they think is adequate, and just powering the device up in full capacity.[2] [1] https://www.raspberrypi.com/documentation/computers/raspberry-pi-5.html#powering-raspberry-pi-5 https://www.raspberrypi.com/documentation/computers/raspberr... [2] https://forums.raspberrypi.com/viewtopic.php?t=358008 https://forums.raspberrypi.com/viewtopic.php?t=358008
- sschueller 3y ago
  Isn't more than 3A at 5V out of USB-PD 2 and 3 spec? You can set max 3A amp for USB PD with just placing a 5.1k resistor on each USB CC line without the need for a USB PD IC. If you need more you would need to request for example 20V at 5A and then buck convert it down to 5V. Not ideal but you can at least pull the current you need through thinner cables and you also have enough to power external USB devices.
  - Kirby64 3y ago
    The “normal” way to support 25W would be to support 9V 3A input, giving 27W adapters functionality. Or possibly accept multiple options such as 9, 12, and 15, and then buck any of those down to the system voltage needed. The 5V5A is because raspberry pi org is being cheap/lazy and doesn’t want to design or pay for a power converter to handle that on the pi, and instead is pushing that complexity/cost to the user via an overpriced and nonstandard supply.

kelvie 3y ago

Wow, that's rough. I use a set of raspberry pi 4Bs as a k8s cluster (with an SSD over USB, otherwise etcd crashes cause the storage is too slow). Luckily I have 5 of them (and a k8s cluster is fault tolerant), because the USB disk randomly does not get enough power -- the voltage drops a lot even pulling 2-3A out of most chargers, I can't imagine doing 5 (the USB cable resistances start to become a factor at higher amperages).

eurekin 3y ago
Hi! How's that working for you? I have a similar cluster, but for CEPH specifically and I couldn't bear the hassle (supposedly hassless updates stuck, until I cleaned up some dirs as a root etc.)
- kelvie 3y ago
  It's been working fine. I have the pi's set up to reboot on disk failures, which fixes 99% of the problems (looking at the up time, ony node still reboots once ever 3 weeks or so), and the pods just get migrated, it's not a huge deal. I use longhorn though, not CEPH, and it's been relatively painless.
ajsnigrutin 3y ago
If you have a cluster, why not just buy a single decent power supply for everything? You can even find good quality ones even on aliexpress, like meanwell lrs-350 (5V, 60A output) for ~$40 on aliexpress and a bit more locally. (not afilliated, just use them a lot for 12v systems)
- HankB99 3y ago
  In some situations power delivery to the Pi is not the issue. It is power delivery from USB to the SSD. I ran into this myself and it was weird. * When the Pi 4B first came out, I connected a cheap Inland (Microcenter house brand) SSD, booting from that, and it ran fine for a while. (Months?) "Better" SSDs like Crucial MX100 had problems under heavy load and I suspected that the instantaneous power demands of the SSD were not met by the USB port on the Pi. (The Pi 4B supports UAS and older Pis did not and the older ones never had problems with USB connected SSDs.) * At some point it started to run into difficulties with the SSD disconnecting under heavy load, requiring a power cycle to restore operation. At that point I began using a powered USB hub to work around this. * Recently a user on some forum (which I have forgotten) suggested that one particular SSD model from Kingston worked fine w/out the need for a powered hub. I acquired one and tested [1] and found this to be true. Just for grins, I also tested some other SSDs that had previously only worked with a powered hub and they worked fine when directly connected. This leads me to believe that the RpiOS folk have been tweaking some settings in the "firmware" [2] that have modified the power delivery from the USB ports. [1] Testing involved running several disk benchmarks as well as 'stress-ng' to load the storage as much as possible. [2] I'm unclear what the Rpi folk mean by "firmware". As an embedded systems developer "firmware" is something written to non-volatile solid state storage like flash or eeprom but when I updated firmware on a Pi, it installed a new kernel too.

arnavpraneet 3y ago

same, there is no charger available anywhere, for my Pi V

zakki 3y ago

Maybe you can find 5V5A adaptor easier than charger. You may need to buy the compatible cable from adaptor to rpi5.

sschueller 3y ago

As far as I know more than 3A at 5V is out of USB spec and should require the use of USB-PD negotiating 20V or so at 5A and then buck convert that down to 5V.

Denvercoder9 3y ago
USB-PD rev 3.1 supports 5A at 5V with electronically marked cables. It's not a requirement to support it, and it's rare to find in the wild, but it's within the spec.

teamonkey 3y ago

It needs a 5V 3A charger. It throttles the max power delivery of the USB ports unless you use a 5V 5A power supply.

kristianp 3y ago

There's an official power supply, there are Indian suppliers listed: https://www.raspberrypi.com/products/27w-power-supply/ https://www.raspberrypi.com/products/27w-power-supply/ Or you can google "raspberry Pi 5 power supply".

kotaKat 3y ago

I love the Pi Foundation's weird cabal of doing things the non-standard way like throwing things like 5V5A or Micro HDMI. Makes things so much more convenient when you have to stop everything to hunt for the right dongle or power adapter and can't just use-what-you-have :)