29
votes
Will any external battery power a Raspberry Pi?
Short answer
Yes, most (but not all!) USB power banks are capable of powering a Raspberry Pi, since they usually have an output voltage of 5 V. And yes, by using a (quite large) 50 Ah power bank, you ...
- 413
10
votes
Will any external battery power a Raspberry Pi?
As long as the power bank outputs 5V it will power the Pi.
It claims 50000mAh so it claims 2.5 amps per hour for 24 hours. Assume it will deliver half that so 1.25 amps for 24 hours.
If that is ...
- 66.3k
10
votes
Powering a PI from 12V
The question seems to be inadequately answered. The best alternative would be a switching mode power supply with simple circuitry such as this:
Although 7805s work well, it's not scalable in the long ...
9
votes
How can I run the Pi on Solar Power?
Here is my setup: 30 watt solar panel with a 12 volt charger hooked up to a 33 amp hour, 12 volt battery. Off of the battery I have a 12 volt to 5 volt battery eliminator that drops the voltage safely ...
- 191
9
votes
Accepted
Can I use a DC-DC step up module to power a Raspberry Pi from 2AA batteries?
Yes, should do
Just double checking the datasheet of the MT3608:
if using AA rechargables instead of batteries, mind the lower voltage (cell voltage 1.2 V), but for two cells in series still above ...
- 15.5k
8
votes
Accepted
Powering Pi from Ni-MH batteries
The batteries won't force current through the system. Your bigger problem, though, will be running the Raspberry Pi 2 at all on 4.8 V. It's very close to under-voltage warning (which I saw quoted as 4....
- 8,848
8
votes
Accepted
Lithium power supply not working
Based on your picture, it looks like the power switch is flipped off. If you look at the board oriented with RPi PowerPack V1.2 at the top, you'll notice there's a switch at the very bottom of the ...
- 11.7k
8
votes
Accepted
Power Pi4 with USB-C Power Bank
Intro:
Many of my contributions to this forum have centered around innovative ways to power a Pi which is awkwardly out of reach of a mains socket, specifically using POE. But what do you do if ...
- 1,539
7
votes
Accepted
Are there alternatives way of power a Raspberry Pi 2 except the microUSB connector?
Yes.
You can power it via the ground and 5V pins on the expansion header.
Once it's booted you can also back power it via the USB (although I
doubt that this is sensible).
Both those methods bypass ...
- 66.3k
6
votes
Accepted
Car computer how to connect to car battery and also not drain battery when the car is switched off
I have not measured it myself, but this person claims the pi draws about 110 mA after shutdown, i.e., when the OS has halted and just the red PWR led glows.
Figures regarding the number of amp-hours ...
- 55.6k
6
votes
Powering a Raspberry Pi without a micro USB cable
The safer is to connect between PP1 (5V) and PP5 (GND).
You don't bypass the power fuse of the RPi.
- 161
6
votes
Powering Raspberry Pi via battery pack and buck converter - how to solve low voltage reboot issues
You've not explained or shown how you have your batteries arranged, nor provided any specs on them. But it seems likely they are in series - thereby providing ~ 9V output.
Batteries in series can ...
- 17.4k
5
votes
How can I run the Pi on Solar Power?
At a minimum you need: a solar panel, a charge controller, a deep cycle battery, a DC-DC buck converter (to reduce battery voltage to 5V), hardware to mount the panel, something to house all the ...
- 51
5
votes
Accepted
Is there a max current that can be supplied when powering the Pi from the pins?
The header power is connected directly to the uUSB connector power and therefore you can power up to 2A through that power supply.
But there is still a current limited between 5V and VBUS on the USB ...
- 431
5
votes
Powering a Raspberry Pi from a vehicle battery 24/7
The Pi draws about 300mA at 5V, plus whatever your GPS unit would draw. Ignoring the small losses associated with a (switching) step-down converter. Say a total of 2W. That would be equivalent to ...
- 1,808
4
votes
Can the USB ports be used to power the Raspberry Pi?
Things have moved on a bit, the situation now depends on which model of Pi you have.
On early raspberry pi model B boards the polyfuses on the USB ports will initially allow backpowering but are ...
- 5,403
4
votes
Will any external battery power a Raspberry Pi?
Sources on the Raspberry Pi forums say the Raspberry Pi uses approximately 500mA add in the 250mA for the camera module, and round for a safety margin equals approximately 1A. A 50,000mAh battery ...
- 141
4
votes
Will any external battery power a Raspberry Pi?
Something to keep in mind is that some power packs will shut themselves down if there isn't enough of a power draw. For example, I have a New Trent PowerPak+ 13500mAH power pack, which shuts itself ...
- 41
4
votes
Possible to power a Raspberry Pi Zero or B+ plugged in via an Ethernet port?
There is a PoE solution designed specifically for the Pi. The Pi PoE Switch Hat is in production and available for presale). As this is a hat it is designed for the 40pin Pi's (A+ B+ and Pi2).
- 34k
4
votes
Can I use a DC-DC step up module to power a Raspberry Pi from 2AA batteries?
I also have an outrageous setup, but with way bigger batteries and is in a server setup.
Your idea will work, as stated by joan. What I would do differently is I'd get a power bank instead. Attach ...
- 7,008
4
votes
Powering a Raspberry Pi from a vehicle battery 24/7
I just wanted to let you know that I actually did this and had some bad results. The upvoted answer is correct that your battery will last a long time while powering the Pi. What he doesn't mention ...
- 76
4
votes
Can Raspberry Pi draw power FROM an external HD?
I'm going to provide a few details on why it is not recommended to do this.
You completely bypass the protection circuit. the RPi has several components on the power socket, such as the polyfuse F1 ...
- 26k
4
votes
Accepted
Powering WS2812B LED strip from Pi brownouts
Powering the Pi using the pins at the GPIO connector and connecting the LEDs at the other pins of the same connector bypasses the Pi's protective circuitry that could not handle that much current. ...
- 15.5k
3
votes
Pi / Pi 2 using modern 'smart' USB Power Adapters to supply power to the Raspberry?
A smart charger does not "listen to" the phone to determine how much current to provide. It is the other way around. The smart charger indicates to the phone how much current the phone is allowed to ...
- 163
3
votes
Pi / Pi 2 using modern 'smart' USB Power Adapters to supply power to the Raspberry?
The Raspberry Pi's micro USB jack is for the supply voltage only. Its data pins are not connected to any circuitry on Pi let alone anything "smart" (just like @goldilocks comment suggests). Reference: ...
- 15.5k
3
votes
Powering without using the micro USB
As others have said you can power the Pi by feeding 5V into P1-2 and ground to P1-6. I've done so for several years using a UBEC. You do bypass the polyfuse and any protection that might give (not ...
- 66.3k
3
votes
Accepted
Wire 5v to raspberry pi b+ without microUsb
I know you don't want to but I'd still use the expansion header. Perhaps wire to the underside of the board so the pins are still usable.
If you really want to wire in a similar fashion to TP1/TP2 ...
- 66.3k
3
votes
Accepted
Outdoor Pi Security Camera
If I were you I would rethink this. Firstly to use the Pi outside you have to make it somehow waterproof so you need to put it in a box or so. Secondly how would you power it overnight? When there's ...
- 286
3
votes
Powering Pi from Ni-MH batteries
As previously stated you need a DC-DC converter, this DROK® Electrical DC-DC Buck Voltage Converter 4.5-40V 12V To 5V/2A Step-down Volt Transformer Stabilizer Voltage Regulator Module Power Supply ...
- 3,050
3
votes
How can I power the pi safely?
EDIT: PLEASE READ PANDALION'S COMMENT. DO NOT TRY THIS METHOD. PLEASE! I AM NOT RESPONSIBLE FOR ANY DAMAGE THIS METHOD OCCURS. I WARN YOU, DO NOT USE THIS METHOD!
You could buy https://www.adafruit....
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Only top scored, non community-wiki answers of a minimum length are eligible