Pi5 always gives low current warning on boot up.

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gwynethh
Posts: 19
Joined: Sat Aug 09, 2025 4:53 pm

Pi5 always gives low current warning on boot up.

Post by gwynethh »

I can't seem to find any good forum to address issues with the CarPiHat Pro powering aPi5. Every boot up I get Pi warning stating "The power supply is not capable of providing 5 amps....". I have a Pi5 with 4gig ram, a Seeed underhat for the boot PCIe memory, a geeek heat sink/fan and the Car Pi Hat Pro. I have disabled Pi5 based BT and WiFi and am using separate modules on a powered hub to reduce on Pi drain and have better reception outside the double DIN cage it will all be installed in.

Summary of parts: Raspberry Pi 5 - 4GB, Raspberry Pi SSD - 256GB, Seeed PCIe 3.0 Dual M.2 HAT for Raspberry Pi 5, CarPiHAT PRO 5 - Car Interface + DAC for Raspberry Pi 5.

Any ideas?
hudiy
Site Admin
Posts: 373
Joined: Mon Jul 14, 2025 7:42 pm

Re: Pi5 always gives low current warning on boot up.

Post by hudiy »

It is probably related to https://www.raspberrypi.com/documentati ... berry-pi-5

It looks like the official Raspberry Pi 27W power supply has some mechanisms that allow the Raspberry Pi 5 to detect it.

Setting usb_max_current_enable=1 in /boot/firmware/config.txt should allow you to get rid of this warning.
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