What is Reddit's opinion of SHNITPWR 5V 20A Power Supply AC/DC Converter Adapter 110V / 240V AC to DC 5 Volt 20 Amp 100W Transformer LED Driver for WS2812B WS2811 WS2801 WS2813 SK6812 LED Pixel Strip Light Router CCTV Camera?

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Here ya go: https://smile.amazon.com/gp/product/B07TZNMD8K/

It's probably a bit overkill, I calculated the load at 12A for the LED strips. I'm running the pi off it though and have a few other 5V things in my entertainment stack that I'm going to add to it.

The answer depends on how many LEDs you’re running. I run multiple 5m LED strips (30LEDs/m) on a 5V 20A power supply (1 supply per 5m strip) with no issues. I have local access to them on a NodeMCU chip, integrated into Home Assistant.

Here’s the math I use for calculating power supply requirements

Amps needed = (Watts/LED * total LEDs)/voltage.

In my example, amps = (0.4*150 LEDs)/5, therefore amps = 60/5 or 12A. Here’s the supply I use but any regular 5V power supply you have laying around works too. Always remember to match the voltage and go more on the amps. Hope this helps.

https://www.amazon.com/dp/B07TZNMD8K/ref=cm_sw_r_cp_api_glt_fabc_E7WZVR71X4GR6RQ6Q2FX

i am using 2 20 amp 5 volt power supplys, or specially https://www.amazon.ca/gp/product/B07TZNMD8K/ref=ppx\_yo\_dt\_b\_asin\_title\_o07\_s00?ie=UTF8&psc=1

Would you consider getting something like this? It'll be more than enough to power 4 RPi 4Bs, but you'll need spare cabling to split the wires and connect them.