Recommendation for reliable RPi 3B+ power supply with more than 2.5A

Help and Support
1

I finally got my new DIY streamer up and running using a Raspberry Pi 3B+, 5" DSI display and a HiFiBerry DAC2 Pro. It all works great, but it frequently complains about being undervolted (i.e. it shows the lightning bolt on the display much of the time). I’m using a CanaKit RPi 3 power supply which provides 5.1V at 2.5A (pretty much the same as the official RPi power supply) - my main issue is that I’ve had bad luck with power supplies not made by the RPi Foundation or CanaKit, even at higher current outputs, and there doesn’t really seem to be any ‘official’ options that provide more than 2.5A.

Has anyone found a decent power supply that provides consistent power in the 3-4A range that has a Micro USB connector, or does anyone have any suitable alternative? Being undervolted hasn’t affected the performance any, but I don’t like the lightning bolt sitting there taunting me.

2

to be honest, I didn’t have much success with 4-5A psu. It either comes with a high voltage drop and low recovery time, increased noise.
A few things to consider:

  • Turning the undervoltage off, if the rPi is working as expected. (least preffered solution)
sudo nano /boot/config.txt

# Disable under-voltage warning 
avoid_warnings=1
  • Power the LCD with a separate PSU (preffered solution)
  • Use a linear PSU