Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [battery]

In electricity, a battery is a device consisting of one or more electrochemical cells that convert stored chemical energy into electrical energy.

8
votes
2answers
8k views

Battery Power Requirements

Is this Maplin Power Bank 4000mAh pwerful enough to power the Pi with all of the peripherals below? This is useful as I cannot order online, and it is currently £15. I have a Raspberry Pi Model B, ...
4
votes
2answers
5k views

Portable power supply for RPI3 and official touchscreen requirements

I have recently bought and assembled a Raspberry PI 3, official touchscreen and case / enclosure. I want to be able to use it whilst out and about with a rechargeable battery and if possible allow ...
26
votes
6answers
78k views

Will any external battery power a Raspberry Pi?

I am working on a project that needs the Raspberry Pi to work without a mains connection. I have considered buying a 50000mAh USB power bank. Would this power a Raspberry Pi, and if so, would it ...
5
votes
3answers
2k views

Powering the Pi from battery (power consumption)

I've got a Pi 2 B+ and I plan on using one of those portable battery-powered phone chargers to power it. I'd like to get about 8 hours of continuous power. I'll also be powering a 5-inch LCD and a ...
8
votes
2answers
49k views

How long does the RPi last on a battery? [duplicate]

For how long can the Raspberry Pi run when powered from a battery of a given capacity? Of course this will strongly depend on how it is used and what devices are connected, but I am trying to get a ...
15
votes
9answers
66k views

What can I use to power my Raspberry Pi Zero with rechargeable battery?

Is there a 5 V rechargeable battery and cables compatible and comparative in size with Raspberry Pi Zero? I don't want to have to plug my Raspberry Pi in every time and nonrechargables get ...
17
votes
3answers
20k views

Is it possible to detect input voltage using only software?

I'm a newbie to Raspberry Pi's, but one of the things I was thinking about doing is running it off batteries (I see many people do this) - that led me to concerns about shutting down gracefully. Is ...
7
votes
2answers
6k views

How long can a RaspberryPi run for on 4 or more AA batteries?

I'm looking to power my Raspberry Pi via rechargeable batteries, but I would like to know how long can it run with x number of batteries. I want to eventually be able to mount it outside and solar ...
2
votes
1answer
3k views

How to check how much battery is left on my Raspberry Pi in the terminal?

Is it possible to check how much power is left on the battery powering my Raspberry Pi zero using the terminal?
1
vote
1answer
780 views

How to measure battery voltage?

I'm using a battery as my power supply. Is there any command or library to check the battery voltage? I want to monitor the battery discharge.
6
votes
3answers
2k views

Powering the Pi with 2 AA batteries

I've tested the Pi with a single 3.7V 18650 battery and this < 5$ power boost/power bank. It works, and this single battery runs for at least 1.5 or 2 hours. (Sidenote: during my tests, the ...
6
votes
0answers
1k views

Running RPi on Solar Panel and battery [closed]

I’m quite new in electronic projects and so my basics are quite limited. I've been reading a lot regarding this topic (refer to the title) and I’m currently planning to buy the suitable Solar Panel, ...
4
votes
4answers
6k views

Battery pack for model B RPI, Thoughts?

Thinking of getting the battery pack linked to below for my model b Raspberry pi, i am wondering if anyone knows anything about it and how could it is because for first glance it looks amazing. Thanks ...
3
votes
3answers
9k views

Battery powered Raspberry Pi [duplicate]

I am interested in using the Raspberry Pi in portable projects for data collection outdoors. How would I go about running the RPi on batteries? Have any software tools been developed to monitor ...
16
votes
2answers
3k views

Measure RPi3 power consumption without external hardware

I power my RPi3 using a power bank for smartphones, and I'd like to check how much power the Pi draws from it while my project is running. I don't have any special equipment for power measurement. Is ...
7
votes
1answer
692 views

Raspberry Pi battery state?

I use a power bank to power my Raspberry Pi, and I want to create script to turn off the Raspberry Pi when the battery level is low, but I cannot find any command to visualize the battery level. I ...
5
votes
1answer
2k views

Power with batteries on 3.3V

I've already investigated how to power the RPi with batteries (I did some tests with AA batteries and with 18650 batteries) using a 5V "boost" step-up DC-DC converter, in some other questions here. ...
3
votes
2answers
351 views

Battery Supply Question

This question may have been asked several times, regardless: It's been quite sometime since I took my electrical courses in tech school and had a question about battery powering my RPi. I currently ...
7
votes
2answers
2k views

Can I use a DC-DC step up module to power a Raspberry Pi from 2AA batteries?

I understand that I can use 4AA batteries and a step down module to get 5V and power the Pi, however briefly. However, now I'm getting real outrageous and want to trying powering the Pi from just 2AA, ...
2
votes
2answers
774 views

Portable power supply for a PiHub?

I love my PiHUB and would like to have a or table power source, so I can make my projects mobile :) Is there any product that I could use? It uses 3A 5.2V. Alternatively I'd appreciate any ...
2
votes
1answer
968 views

Battery level of USB power bank [duplicate]

I plan to use a USB power bank to power my Raspberry Pi 3 Model B, but I need to know the battery level/percentage. There is the battery icon and percentage in the top right corner. Does this ...
1
vote
2answers
828 views

Is halted a viable state for a battery powered pi zero long-term?

I'm building a battery powered device with a pi zero. The battery is a 3.7v LiPo w/ 2000mAh. I want to be able to safely shutdown and restart the pi using a single switch or button. (preferably ...
1
vote
0answers
49 views

Portable Power Supply [duplicate]

I need guidance on how to calculate how long I can power my Pi from an external power bank when I have USB and GPIO peripherals connected. I am considering buying this power bank pack. It says that ...
1
vote
1answer
778 views

Measure SoC (Juice left) in battery

I'm powering my raspberry pi with 2 no-break batteries. I want to know if is there any way for me to know how many percent of the battery is left. If is there anyway to measure it would be great so I ...