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

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0
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1answer
23 views

Portable solar-powered .gif frame

Here's a project challenge: looking to create a portable rpi-powered .gif frame similar to this, except one that wouldn't require internet connection and would just store the .gif collection on its SD ...
12
votes
2answers
1k 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 ...
1
vote
0answers
43 views

Using external cellphone backup battery as “UPS” for Pi?

I'm currently experimenting using an external power supply (for cellphones) as a type of "UPS" for my Pi. It seems to work quite well. Can anyone think of a reason why this isn't a good idea? I got ...
0
votes
3answers
110 views

Can This UPS(UNINTERRUPTIBLE POWER SUPPLY) Run a Raspberry Pi for 24hours?

I am setting up an experiment that will need to run for 15 days straight and I am using a Raspberry Pi as a data logger. In my place power outages occurs from time to time. I am searching for cheap ...
4
votes
2answers
202 views

Automatic shutdown of Pi Zero on low battery

I am trying to build a battery powered Pi Zero, using a LiPo battery and the Adafruit Powerboost 500. I would like to be able to use the low battery output (LBO) on the powerboost to tell the Pi to ...
1
vote
1answer
68 views

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

Is it possible to check how much battery is left on the raspberry pi on the terminal. NOTE: I am using a battery pack to power my raspberry pi zero.
1
vote
1answer
106 views

PI2B safe shutdown procedure on low battery and auto start

I have a RPI2B controlling a mobile CCTV setup. System runs on 12V (solar panels + batteries) with a low voltage disconnect (LVD) and PI powered by a buck step-down converter. RPI drives a relay via ...
0
votes
0answers
57 views

Powering EL (electroluminiscent) wire with Raspberry Pi 2?

I have bought this 3 items: Electroluminescent (EL) Wire - 2.5 meters (https://www.adafruit.com/products/406) EL wire 4xAAA pocket inverter (https://www.adafruit.com/products/564) USB Battery Pack ...
1
vote
1answer
76 views

cansend to a CANBus device doesnt work

I am trying to control an Elcon battery charger (http://www.elconchargers.com/catalog/item/7344653/7638003.htm ) which outputs a DC voltage and current and can be set through a CANBus adapter. I ...
0
votes
2answers
55 views

Are there any battery packs than can act as a UPS? [closed]

I have an external battery pack, for my phone - it charges via USB. I was thinking I could use it to power my new Pi Zero - if the power goes out - but I realised the one I have cannot be charged and ...
0
votes
1answer
38 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.
0
votes
1answer
161 views

How many AA batteries do I need to power a raspberry pi zero and for how long does it last? [duplicate]

Since the raspberry pi zero takes less power to power up. How many AA batteries do I need to power it up to play a movie in a loop? And how long would this last?
6
votes
2answers
368 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, ...
1
vote
0answers
55 views

Are there any load sharing lipo battery charger modules outside of Adafruit? [closed]

I would like to know if load-sharing lipo battery charging modules are common place. The exact module I am looking for is something that takes a 5V 1A/2A input USB charging cable, uses the input to ...
1
vote
1answer
41 views

Will this DC step down chip allow me to power Raspberry Pi using AA batteries?

I understand that typical alkaline batteries lose voltage as they die, making them a poor choice for sensitive electronics without proper handling, and that lithium AA batteries are usually slightly ...
2
votes
0answers
99 views

Very small sized battery for RasPi Zero?

I have an idea for an embedded system with the Pi Zero, but for this I need a very small and light weight (<40g) battery which can power this little thing for about 15 minutes. I am aware of this ...
4
votes
7answers
4k 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 ...
4
votes
3answers
162 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 ...
1
vote
1answer
181 views

Using an I2C Battery Fuel Gauge Device Driver

I have connected the TI-make battery fuel gauge and charger to the I2C port of my raspberry Pi and eventually plan to control them using RPi. I have some minimally working code. However, I found a few ...
1
vote
1answer
88 views

I2Cdetect doesnt detect my I2C device

I am using a BQ27441EVM-G1B. It is a TI battery fuel gauge board, that is used to measure the battery voltage, current and charge left etc. Datasheet - http://www.ti.com/lit/ds/symlink/bq27441-g1.pdf ...
2
votes
1answer
70 views

Controlling a backup battery after shutdown

Connected to my pi is an adafruit fona (a cellular phone), and a manhattan usb hub with external power. My pi, as well as the fona, are connected to a 3.7V 1200mAh backup battery. The pi is configured ...
1
vote
1answer
103 views

Getting more voltage/amperage from the Raspberry Pi 2 GPIO pins

So yeah, I'm trying to get some more voltage/amperage from the GPIO pins on my Raspberry Pi 2 Model B. I've ran several tests and I'm only getting about 3.2V and 30-40mA. This cannot do much, there ...
3
votes
1answer
86 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 ...
4
votes
1answer
107 views

Remotely connecting to the PI to download images

I'm trying to build a little project (my first) with my Pi which is running Raspbian. I want to set up a camera on my piece of land where I'm going to build my house to take some time lapse photo's. ...
9
votes
3answers
391 views

Powering Pi from Ni-MH batteries

I would like to power my RPi2 from the 5V GPIO pin via 4 Ni-MH rechargeable batteries (4.8V) but I'm afraid about peak current. Can it somehow produce more than 2.5A? Should I use a fuse to limit that ...
0
votes
2answers
100 views

Raspberry pi location detection [closed]

Id like to create a small "car" alike robot (4 wheels and steering via servo) that will travel around my house. Id like the robot to be able to go and charge itself when its batteries are low, I do ...
1
vote
1answer
100 views

Solar Panel + Raspbery Pi B+ Revision 2 compatiblility?

Is the following product compatible with the new B+ revision? ...
0
votes
5answers
102 views

need an opinion for portable power [closed]

I know opinion questions are frowned upon in the maker world (too many right answers and all) BUT I'm working on a pi powered security bot. I've got most of the prototyping and programming done (using ...
0
votes
1answer
173 views

Running a Raspberry Pi off of a Wii Balance Board

I am working on an internet connected scale. I want it to theoretically run forever without my intervention so I picked up this battery pack for my balance board. I plan on having the board constantly ...
3
votes
1answer
398 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. ...
0
votes
1answer
112 views

What to buy to build a simple robot with Raspberry Pi? [closed]

My name is Faiz and I live in Pakistan. Here, there is no ebay or amazon so I cannot order things from there. Now tomorrow I am going to shopping out of city and I need some help from the community. ...
0
votes
1answer
59 views

Powering via a motion sensor using a battery pack

I'm new to Raspberry Pi and I had a few questions. I want to connect a raspberry pi to a e-ink display, it will retrieve content over wifi. It will only display when a motion sensor picks up on light ...
0
votes
1answer
24 views

Choosing the right converter

I'm having trouble calculating the right converter to buy in order to power a Raspberry 2 from batteries. I'm using 6 batteries (6x1.5V) so I guess I'll need to get an UBEC Converter like this one. ...
1
vote
0answers
31 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 ...
5
votes
3answers
687 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 ...
3
votes
2answers
4k views

Power Bank + raspberry pi 2, any throughts?

I am currently thinking about buying a Power Bank to use as a power supply for my Raspberry Pi 2. At the moment I am looking at the XIAOMI Power Bank 5V 2.1A 16000mAh. My questions are: Will it ...
1
vote
1answer
60 views

My Pi won't boot after battery defect

my Pi A+ won't boot. Both leds are always on, no blinking. This happends after connecting usb powerbank to gpio pins to power raspberry. My Pi got hot and then... just died. I tried to reflash microsd ...
2
votes
4answers
2k views

Power Raspberry with LiPo battery

I have a LiPo batterery: EZ-power LiPo 4000mah - 2s 7.4 How could I power the Raspberry, I just know that Pi works at almost 5V.
3
votes
1answer
171 views

Making batteries last for pi outside

I want to use the pi to analyze the moisture of my plants and decide to water or not. I want it set up in the garden. There is no power supply, so the pi will need to run on batteries. The plan is ...
1
vote
1answer
344 views

Problem when trying to get a DC motor to run using the L298N H-Bridge?

My setup is as follows: Using this motor controller board, I have one DC motor (I'm new to electronics, so I'm not sure when I say it's rated at 1.5V, because one 1.5V AA battery on its own makes it ...
1
vote
4answers
131 views

Can you use a Raspberry Pi to write code that powers an onboard LED or motor or fan? [closed]

In other words, is it possible to solder on an LED or a fan or a motor (perhaps even a custom-made piece of hardware) and then write software that can send power from a battery to the added device? ...
1
vote
1answer
332 views

How do I turn off my Rasperry Pi when it's connected to a battery pack?

I currently have my raspberry pi set up such that it's connected to this assembled 320x240 2.8" TFT + Touchscreen that I got from Adafruit (https://www.adafruit.com/product/1601). I am also powering ...
2
votes
5answers
3k views

Will a Duracell 9V battery power my Raspberry Pi for 24 hours? [duplicate]

Will a Duracell 9V battery power my Raspberry Pi (plus camera module) for 24 hours? I've tried power banks and the 50,000mAh rating seems a bit exaggerated, considering I'm getting just 5/6 hours ...
13
votes
6answers
31k 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
0answers
604 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, ...
1
vote
1answer
283 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 ...
0
votes
2answers
98 views

Read load of battery via USB

I don't know if it is the right forum to ask the question but I just post it here. I have a power bank connected to my rpi b+ and I want to ask if it is in general possible to read the current load ...
0
votes
1answer
353 views

Viewing battery status Archlinux arm

I have a portable USB charger/external battery pack. The exact model is this one http://goo.gl/d9CgCa. My raspberry pi is running ArchLinux Arm. I am trying to view the battery status and other ...
2
votes
2answers
492 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 ...
5
votes
3answers
578 views

UPS for raspberry pi

I want to be able to power my pi like a smartphone (ie from battery or from mains (while charging the battery), hot swappable) I know there are boards like the MoPi that achieve this, but the ...