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I have an Anker Atom 3 4-port power supply (https://us.anker.com/products/a2045). In the USB-C port, I've got a USB-C ub plugged in that goes to my chromecast w/ Google TV as well as a web cam for a cheap video conference setup. I'm also trying to use one of the USB-A ports to power a Raspberry Pi 3b, running the lastest OS with Pi-Hole and Zerotier on it. However, it's giving me a low voltage warning. Everything seems to run fine, but would be nice to get rid of the warning.

Tech specs for the PSU say that each of the USB-A ports should supply 2.4A@5V (4A total), so with noting else plugged in, it should be enough for the Pi. So I don't understand why I'm getting the LVW. Any thoughts?

Evan M.
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2 Answers2

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If you get a low voltage warning it is because the voltage is low!

Like the hundreds of similar questions on this site the answer is the same.

Either the "power supply" is inadequate or the wiring is inadequate (or both).

The world is awash with poor chargers, which are DESIGNED to change batteries.

Try an official power supply.

Milliways
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Cable also can be a problem. Bad micro-usb cables can also cause low voltage. Very thin wires, long cables, blackened and distorted usb connection causes voltage drop. Try some qualified micro-usb cables.

alkas
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Hakan Ulusoy
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