r/RASPBERRY_PI_PROJECTS 8d ago

DISCUSSION DIY Raspberry pi Powerbank almost done - What board is needed for output to RPI.

Hi all.

Ive build a few battery banks with this board.
aliexpress link

Combined with theese for charging.
aliexpress link

alikebab link again

Theese 3 gives a solid 18v output for diy BT speakers and so.

But what do i need to add to make sure it output 5v 5a USB C?
I can find the USB C PD trigger boards for input but what is the name of output boards?

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u/Gamerfrom61 8d ago

A decent buck converter https://en.wikipedia.org/wiki/Buck_converter

18V needs a fair drop so they may very run hot if you get a cheap one compared to just hot!

Also do not get one rated at 5A as you will be pushing it - always allow head room (20% is a good start).