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Can I damage or even kill a sbc if I use a power supply with a lower amperage than what is recommended/expected by the manufacturers? (self.raspberrypi)

submitted 11 months ago by GustavoM to c/[email protected]

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Title. In other words, sbc recommended/optimal power supply is 5V4A but I use an 5V3A instead -- will it damage or kill the sbc? The reasoning behind this is "an direct undervolting towards the system, for lower power draw and temps".

Thanks in advance.

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[–] [email protected] 3 points 11 months ago* (last edited 11 months ago) (1 children)

I don't think so, in worst case it will just not work at all. First think is that the recommended requirements are for 'maximum load', so as long as you don't load it too much, it should be ok.

Now I think you will be more concerned about the behavior of the power supply when overloaded. It can go from a voltage drop (which will cause your sbc to reset or shutdown), an output cut or the magic smoke can come out if the supply is wrongly designed. There are minimum risk that the sbc is damaged (0 risk don't exists) although.

[–] GustavoM 1 points 11 months ago

There are minimum risk that the sbc is damaged (0 risk don’t exists) although.

Let me guess -- those same risks also exists with a (required volts per amps) power supply? Then again, I'm planning to use it on an sbc meant to stay idle 24/7, so I guess I should be fine. Thank you for your input as well.