It is USB standard compliant and uses USB-PD negotiation for determine available power supply. It will not ever select any of the higher voltage modes, only 5V modes.Hi so what I can share you to my understanding is that
1. The Pi 5 figures out max power at startup through USB-C negotiation. It follows standards like USB Power Delivery.
2. A 22.5W power supply is enough, and powerbanks offering 4.5A/5V or 5A/4.5V via USB-A with a USB-C cable should work.
Coming to your bonus quetion lol: No official Pi 5 Powerbank plans yet. For off-grid use, think about adding your Pi 5 to a
solar power system for reliable remote operation.
A 5V@3A supply is enough for most applications. 5A/4.5V will not work as the Pi requires 5V. It is all about what 5V modes are available, not the claimed wattage of the power supply.
If it does not negotiate a 5V@5A mode, it will limit the power available to the USB ports unless you override it.
Statistics: Posted by bjtheone — Mon Mar 04, 2024 2:06 pm