UPS for RPi 4

Hardware
21

Exactly. Because without using GPU at all, the power consumption wouldn’t be anywhere near the maximum you could encounter when using it as a cheap desktop PC. And the recommended power supply need to be able to handle such usage without a glitch…hence those recommended 3 Amps.

It is important to have the power supply with stable 5+ Volts though. I have bad experience even with original 2.5A power bricks for RPi 3, that after some time, I start getting undervoltage warnings even during medium load not reaching anywhere near 1.5A

22

For those interested here are the details of my setup with UPS Voltaic V25 and SSD:

23

Some may don’t know but there is thing’s available sometimes called “mini UPS”:


Looks more or less like a normal PSU but comes with a battery/controller inside.

The 12V versions are typically cheaper. With a little step down board it easily can output 5V to a :strawberry: berry thing

1 Like
24

Interesting idea, thanks!