Chargers or power supplies -- which ones to use? (lemmy.world)

submitted 11 months ago by GustavoM@lemmy.world to c/raspberrypi@lemmy.ml

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Is there any difference from one another? I keep hearing that using chargers is absolutely a no-go and that power supplies are much safer and better overall. Do you guys confirm this?

Thanks in advance.

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[-] dmention7@lemm.ee 6 points 11 months ago

Not all USB power supplies are rated for the current the rpi requires (i forget the number off hand). Anecdotally I had nothing but trouble using a name brand charger supposedly rated for the correct current, which disappeared the instant I switched to a $15 power supply specifically sold for rpi.

For the minor cost and potential headaches of brownouts and unexpected shutdowns, and given that you are asking the question, I would absolutely go with one made for an rpi.

[-] Successful_Try543@feddit.de 2 points 11 months ago* (last edited 11 months ago)

The general difference is, a charger will try to keep the current constant and therefore slightly vary the voltage which may harm the equipment when used as a power supply. A dedicated power supply will try to keep the voltage constant, i.e. independent of the current the hardware is taking.

this post was submitted on 29 Nov 2023

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