Raspberry Pi Stack Exchange
Raspberry Pi Stack Exchange

Questions tagged [power-supply]

The methods for powering the Raspberry Pi (typically via its micro-USB connection.)

The methods for powering the Raspberry Pi via its micro-USB connection.

What are the power requirements?

The power supply should support 5V and 700 - 2000 mA depending on the usage of the attached devices.

For other power methods that do not relate to the Raspberry Pi's micro-USB connection, please use the tag in conjunction with .

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What's the current draw and supply voltage tolerance?

What's the current draw when the Raspi is at idle (min), and at 100% CPU/GPU (max)? (With no peripherals/accessories plugged in) What's the minimum and maximum voltage allowed to run the Raspi stably?
Alex L
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Powering from a non-dedicated power source

While the quick start guide says not to power the device from a USB hub or from a computer, the only requirements for power listed are: Micro USB power supply – make sure you use a good quality one, capable of providing at least 700mA at 5V When…
ramblinjan
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What do I need to know when choosing a dedicated power supply?

This question asks about what you'd need to know to power a Pi from a non-dedicated power source. It also links to the Quick Start Guide, which says: Micro USB power supply – make sure you use a good quality one, capable of providing at least…
Highly Irregular
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What happens if the power supply is 550 mA?

I read that the current should be at least 700 mA. I plugged a power supply with output current of 550 mA, and it seems to work fine. Can something happen to my Raspberry Pi? Does a wrong current influence the performance?
Alessandro Cosentino
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Can I feed the device with a current rating that's higher than what's recommended?

The quick guide says that the power supply for my Raspberry Pi model should provide at least 700mA. How about the upper bound? Is it fine to use a power supply with an high output current, say higher or equal to 1A? This is symmetric to my question:…
Alessandro Cosentino
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Does the power supply need to be exactly 5 volts?

After searching all over my house, all I could find was an LG "Travel Adapter" with an output of 5.1V == 0.7A. Will the extra tenth of a Volt harm the Raspberry Pi?
tehtros
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Raspberry Pi power source supply

I read that the current should be at least 700mA. can I use HTC Google Nexus One charger as my Raspberry Pi power source supply ?
Bishan
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Can I power a USB SSD/HDD?

I read the power supply should have 0.7A and that RPi by itself requires around 0.4A-0.5A. So, what if I want to connect an external USB SSD/HDD? External SSD can require 0.5A (and maybe more), so should I use a power supply with more than 0.7A?…
Paolo
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What are the dangers of connecting the Micro-USB through an adapter straight to the mains?

I have a USB-Mains power adapter for charging up an iPod, which I thought I would use to power my Pi. It looks like this: with USB one side, and Mains the other. I was wondering if there are any dangers I need to be aware of when connecting my Pi…
ACarter
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Safe to power a raspberry pi from a 50W adapter

I have a power adapter that is rated at 50W (5V, 10A output), and I was wondering if it would be safe to run a single pi from it? I am planning on using it for powering more in the future, but would it require 10 be connected (in parallel) to…
topherg
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How can I build a power switch?

I would like to be able to have a simple power switch between the RPi and its USB power, such that I don't have to plug and unplug the device to operate it. Is there a simple switch available that I can buy or build?
Resorath
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Can I use a standard PC power supply to power a Raspberry Pi?

Can I use a standard PC power supply to power a Raspberry Pi, e.g. iMicro IM400W 400W ATX12V Power Supply (or just take one from an old unused computer)? Amazingly, these things are sold starting from 1$. Most people seem to be looking for small and…
Reto Höhener
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Raspberry Pi 4: turn red LED off (via software)

I have an RPI 4 in my room. When I sleep the red light fills a big part of the room. I don't want to turn the pi off as I want 24/7 availability. Its ability to be quiet and always available is why I find it appealing to use. I thought about…
Melvin Roest
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What type of micro-USB is used?

From previous experience I've discovered there are quite a few different types of micro-USB connectors. Here are three main ones: I'm pretty sure it's not the middle one; and I think it's the left one, but better safe than sorry. So is it the one I…
ACarter
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Dangers of Underpowered Pi?

I'm reading that the lightning bolt in the top right corner of my pi means that it is currently underpowered. I won't be able to get a new cord for a few days and I'm wondering if running under powered will have any long term negative effect on the…
Philip Kirkbride
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