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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0answers
8 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
28 views

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

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
25 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
81 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
299 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
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0answers
26 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
34 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 ...
1
vote
0answers
64 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 ...
1
vote
7answers
915 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
116 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
72 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
46 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
51 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
75 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
0answers
52 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 ...
3
votes
1answer
91 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. ...
8
votes
3answers
353 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
74 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
90 views

Solar Panel + Raspbery Pi B+ Revision 2 compatiblility?

Is the following product compatible with the new B+ revision? ...
0
votes
5answers
95 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
145 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
293 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
102 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
47 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
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0answers
28 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
578 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 ...
2
votes
2answers
3k 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 ...
0
votes
1answer
52 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
1k 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
152 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
278 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
119 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
258 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
2k 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 ...
10
votes
6answers
26k 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
516 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, ...
0
votes
1answer
228 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
93 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
315 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
439 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
434 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 ...
4
votes
1answer
229 views

UPS for Raspberry Pi and router (TPLINK TD-W8961) [duplicate]

I have started hosting a website on my raspberry pi, but because of the power outages, and mostly because I'm itching for a DIY project I would like to build a UPS for my pi and my router(12v-1,5A). ...
2
votes
1answer
187 views

Power Pi from Li battery?

I would like to use a 4.2V(voltage varies from 3.6v up to 4.2v) Li battery to power a Pi - for this it seems like I would need a DC-DC boost converter. From what I found, all of those seem to create ...
0
votes
3answers
812 views

7.2V battery with Raspberry Pi

I want to use a 7.2V (4200mAh) battery with my raspberry pi but I need to convert the output to 5V (2000mAh), I tried the following formula: Ω = V / A but when I try to find the ohms the result ...
0
votes
3answers
212 views

Using battery pack as a UPS

I need to use raspberry devices as mini servers. I'll need to install ~100 of them in different locations. In those areas, electricity power offs are quite common, so I'm thinking using a cheap usb ...
2
votes
2answers
7k 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 ...
0
votes
2answers
69 views

How to know when to pull the power from SSH

I've been playing around with my Pi on a battery recently. I have the Pi set up so that I can SSH into it. Using the standard commands(sudo shutdown -h now) to shutdown work at bringing the Pi down, ...
4
votes
3answers
212 views

Can I power my pi with an 800 ma/h battery?

I bought a rayovac portable charger. It outputs current at 800 ma/h, as stated on the product packaging. My goal here was to make my pi (model B) itself portable, as the battery outputs that current ...
0
votes
2answers
79 views

Battery packs without “blip”

The Battery pack I am using for the has just one problem... plug in the pack to charge the pack itself, and it blips, rebooting the pi (not the mention shutting down most ungracefully.) Are there any ...