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Can the raspberry pi 4b be powered by a rechargeable treasure?
The Raspberry Pi 4b uses a 5V DC power supply, and the U port of the rechargeable treasure is providing 5V, which can power the Raspberry Pi.

But the problem that needs to be confirmed is that the current demand of the Raspberry Pi may reach more than 2.5A. Only the rechargeable treasure can provide more than 5V2.5A power, in order to stabilize the power supply for the Raspberry Pi 4B.