Subj : Re: pi5 psu?
To   : All
From : Daniel James
Date : Sun Oct 12 2025 16:03:23

On 09/10/2025 16:42, Mike Scott wrote:
> I've just installed rasp OS on a new pi5 for the first time. It moans 
> the psu is insufficient, and can't deliver 5A. But the psu itself - a 
> kosher raspberry pi one - claims it will deliver 5A/25W.

That doesn't sound right.

Raspberry Pi sell three different USB-C PSUs:

- A 15W PSU for use with the Pi 4/400 only.
- A 27W PSU for use with the Pi5/500 (and 4/400)
- A 45W PSU which is like the 27W but more powerful and can power some 
laptops, etc.

The 27W and 45W PSUs support the USB Power Delivery spec and will 
provide a range of powers/voltages after negotiation with the device. 
The 15W PSU provides only 5V/3A, and is stated to be inadequate for the 
Pi5 and later.

There is no official "kosher" 25W PSU from Raspberry Pi.

-- 
Cheers,
  Daniel.

--- PyGate Linux v1.0
 * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

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