Bluemerlin
Posts: 57
Joined: Tue Dec 20, 2011 3:41 pm

Battery Power/Pack

Thu May 24, 2012 10:49 am

Just found one of these at work:

http://www.amazon.co.uk/Duracell-PPS2-I ... B001GXNJLC

Usb in to charge, Usb out to power the pi.

Lists input 5V 0.8A, output 5V 0.6A Max 3W

I'm just going to test it with the PI.

godFather89
Posts: 150
Joined: Fri May 18, 2012 9:40 am
Location: Timisoara, RO

Re: Battery Power/Pack

Thu May 24, 2012 11:16 am

1150mAh for a Li-Ion cell (@3.7V) means @4.2Wh. Assuming Pi takes about 2W and the conversion efficiency is 100% (it isn't. 70-80% more likely), it will keep the Pi running for about 2 hours.
If you plug something in the Pi, it will be shorter...

Aikidokajeff
Posts: 68
Joined: Fri May 25, 2012 3:31 pm

Re: Battery Power/Pack

Fri May 25, 2012 3:44 pm

I'm using a battery pack for my RaspberryPi.
I purchsed this from Maplin.co.uk: http://www.maplin.co.uk/6000mah-portabl ... ces-625614
It is 6000mAh and has run my raspberryPi for over 6 hours without going off the 100% indicator light.
I'm very impressed.

My Pi with battery pack attached :-)
Image
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domesday
Posts: 258
Joined: Fri Oct 21, 2011 5:53 pm
Location: UK

Re: Battery Power/Pack

Fri May 25, 2012 5:44 pm

If you don't fancy paying ridiculous prices from maplin then you could try this http://www.amazon.co.uk/gp/product/B005 ... ukdeals-21

User avatar
j4d
Posts: 3
Joined: Sat Mar 03, 2012 11:30 am

Re: Battery Power/Pack

Tue May 29, 2012 12:03 pm

I have been using a Veho Pebble to power my Pi

http://tinyurl.com/cul97dq

Works well and lasts a long time. Just need a bigger battery pack for my monitor now and I'll have a truly portable system!

Fanjita
Posts: 17
Joined: Thu Jun 07, 2012 9:31 am
Location: Edinburgh, UK
Contact: Website

Re: Battery Power/Pack

Tue Jul 03, 2012 2:17 pm

Here's my comparison of a few different, cheap options for reliable battery power:

http://www.fanjita.org/serendipity/arch ... eries.html

Janko
Posts: 1
Joined: Thu Jul 26, 2012 2:26 pm

Re: Battery Power/Pack

Thu Jul 26, 2012 2:33 pm

Hi Everybody,
I was looking for a solution for an home made UPS for my Raspberry, and accidentally happen to land on this interesting forum.
What I am not sure though, is whether the solutions you described fits my needs.
The main difference is that I would need to constantly recharge/power the "box" which should intervene with 5v only in case the power from the main outlet is cut. From what i read on the links you posted, all the proposed devices needs to be recharged first, then used, right?

Can you maybe suggest a solution?
thank you.
Marco.

Patschi
Posts: 44
Joined: Thu Jun 07, 2012 1:04 am
Location: Austria
Contact: ICQ Website

Re: Battery Power/Pack

Sat Jul 28, 2012 5:23 pm

I found an usb loader on the german amazon:
http://www.amazon.de/Anker-Astro3-10000 ... 0067XRL56/

A friend said, that it is possible to let the Raspberry Pi run for about 12 hours.
My german homepage: http://pkern.at (Ofcourse Raspberry Pi articles too :D)

devyl
Posts: 7
Joined: Fri Aug 03, 2012 11:26 am

Re: Battery Power/Pack

Fri Aug 03, 2012 8:15 pm

i successfully run my pi on 4 AA batteries... but is there a possibility to read the loading state of the batteries and how much power they give to the microusb?

User avatar
redhawk
Posts: 3465
Joined: Sun Mar 04, 2012 2:13 pm
Location: ::1

Re: Battery Power/Pack

Fri Aug 03, 2012 10:25 pm

Hook up a small analogue meter (with appropriate resistor divider network) to the GIO at pin 1 and 3 this is the best way to measure the 5volts power source the same as using TP1 and TP2.
As for the USB ports the I wouldn't worry too much just make sure the PI has sufficient power and is running at the correct voltage and your USB devices should behave as if you was using a wall charger.

Richard S.

zasca234
Posts: 1
Joined: Tue Oct 30, 2012 7:04 pm

Re: Battery Power/Pack

Tue Oct 30, 2012 7:05 pm

Would a 6Ah battery pack work? Here is the one I am looking at: http://www.coolcomponents.co.uk/catalog ... p-621.html
thanks,
zasca234

MegaGumbo
Posts: 94
Joined: Mon Feb 13, 2012 4:45 pm

Re: Battery Power/Pack

Tue Dec 04, 2012 5:17 pm

As long as you can get a 1A current from it, almost any battery pack will do. I bought the PowerGen Duo-Power battery pack, it has 8400mAh and powered my Pi for 9 hrs. and 44 min. (headless Raspberry Pi: no monitor, keyboard, mouse attached - only a WLAN stick). The battery still powered the Pi when I shut down the machine after the 9:44 hours to end the endurance test. Great! :mrgreen:

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Mortimer
Posts: 885
Joined: Sun Jun 10, 2012 3:57 pm

Re: Battery Power/Pack

Tue Dec 04, 2012 5:43 pm

It's not as simple as that MegaGumbo, the 6Ah battery pack zasca234 is looking at is a 3.7V nominal pack, so would require addition components to get the 5V stable supply the Raspberry Pi needs. Your PowerGen Duo device does that for you.

As a point of interest, can the PowerGen Duo 8400 provide power to a Raspberry Pi whilst being charged at the same time? Or do the outputs shut off when it is being charged?

Wheim
Posts: 1
Joined: Thu Dec 13, 2012 8:16 pm

Re: Battery Power/Pack

Thu Dec 13, 2012 8:20 pm

I'm very tempted to purchase something like the aforementioned http://www.amazon.co.uk/gp/product/B005 ... ukdeals-21 to power my Pi (as I need something wireless).

It has a DC 5V/1A USB output, and a total 5600 mAh, so this should work, right?

henry_blackie
Posts: 9
Joined: Fri Jun 29, 2012 8:01 pm

Re: Battery Power/Pack

Tue Feb 05, 2013 11:48 am

If you get a battery pack that's too big will it break the Pi? I've been looking at mobile phone chargers and am not sure what size I should get.

User avatar
dasimpson
Posts: 311
Joined: Fri Jun 29, 2012 2:17 pm

Re: Battery Power/Pack

Tue Feb 05, 2013 11:54 am

i can tell you how to build a li-ion battery pack from ebay items for about £10 that will give you about 17.6 amp hours this is not counting the dc inverters power need
tesating it normaly needs 500mah extra on top of a 1 amp load

User avatar
Mortimer
Posts: 885
Joined: Sun Jun 10, 2012 3:57 pm

Re: Battery Power/Pack

Tue Feb 05, 2013 12:01 pm

henry_blackie wrote:If you get a battery pack that's too big will it break the Pi? I've been looking at mobile phone chargers and am not sure what size I should get.
A bigger battery pack provided it supplies the correct Voltage will not break the Raspberry Pi, it will simply run it for longer.

Most of the battery packs sold as mobile phone chargers, that have a 5V USB style socket on it should do the trick. Any that are rated at 500mA, might be problematic if you try and connect loads of USB devices to the Raspberry Pi at the same time though. Generally speaking the packs are at least 1A, and some are rated at 2A.

Ones that charge from a USB source like my iEP387 can usually only supply power to a device, or be charged. They can't do both at the same time, so cannot behave like a mini-UPS.

Ones that use a higher Voltage to charge and use a non-USB type connector for input power, often are able to provide a regulated USB 5V output at the same time as being charged, and might be able to behave like a mini UPS.

User avatar
dasimpson
Posts: 311
Joined: Fri Jun 29, 2012 2:17 pm

Re: Battery Power/Pack

Tue Feb 05, 2013 12:03 pm

this is my diy battery pack for anything that needs usb power

parts list
option one total cost £30 give or take possible 6800mah
charging circuit http://www.ebay.co.uk/itm/281057379475? ... 1423.l2649
battery's http://www.ebay.co.uk/itm/170976268533? ... 1423.l2649
inverter http://www.ebay.co.uk/itm/DC-DC-3V-to-5 ... 43aa2867f9

parts list
option two total cost if you get a battery for £3.99 is £11 possible 17600mah
charging circuit http://www.ebay.co.uk/itm/281057379475? ... 1423.l2649
battery's old laptop battery can be found cheap on ebay as little as £3.99
protection circuit http://www.ebay.co.uk/itm/Replacement-C ... 5aebdfedac
inverter http://www.ebay.co.uk/itm/DC-DC-3V-to-5 ... 43aa2867f9


the protection circuit is needed befor the inverter as the inverter will pull the voltage down below what is classed a safe discharge voltage of 2.8 volt

asdqwe161
Posts: 2
Joined: Sat Mar 23, 2013 3:30 pm

Re: Battery Power/Pack

Sat Mar 23, 2013 3:33 pm

I was just wondering if this power pack would work? http://www.amazon.co.uk/gp/product/B009 ... lectronics
Thanks

asdqwe161
Posts: 2
Joined: Sat Mar 23, 2013 3:30 pm

Re: Battery Power/Pack

Sat Mar 23, 2013 5:13 pm

I was wonderign if this battery would work? http://www.amazon.co.uk/gp/product/B009 ... lectronics

User avatar
rew
Posts: 410
Joined: Fri Aug 26, 2011 3:25 pm

Re: Battery Power/Pack

Mon Mar 25, 2013 9:24 am

Sure looks like it will work. It's got plenty of power to spare. :-)
Check out our raspberry pi addons: https://www.bitwizard.nl/shop/

User avatar
hcunningham
Posts: 43
Joined: Fri Mar 30, 2012 12:07 pm
Location: Sheffield, UK
Contact: Website

Re: Battery Power/Pack

Wed Feb 05, 2014 3:10 pm

many battery packs drive the Pi very well -- but almost none of them will alert the Pi to low charge so that it can shut itself down cleanly... so we've developed an add-on board called MoPi to do this (and other things like hot swap, UPS, power switch etc.) and just launched it on kickstarter: https://www.kickstarter.com/projects/ha ... spberry-pi

cheers,

h
Hamish Cunningham http://pi.gate.ac.uk/
Mobile and 24/7 power for the Pi: Feb 2014 Kickstarter at http://tinyurl.com/mobile-pi

raspi-ups
Posts: 3
Joined: Sun Mar 15, 2015 12:20 am

Re: Battery Power/Pack

Tue May 05, 2015 7:56 pm

hcunningham wrote:many battery packs drive the Pi very well -- but almost none of them will alert the Pi to low charge so that it can shut itself down cleanly
It's actually possible to do this by using a very simple trick, which allows you to set up a full-fledged, cheap and simple UPS for your Raspberry Pi on your own, without the need for an additional hardware module. I've written up the details on my weblog - see http://raspi-ups.appspot.com for further info!

JoshMan619
Posts: 1
Joined: Fri Jul 31, 2015 4:26 am

Re: Battery Power/Pack

Fri Jul 31, 2015 4:30 am

WOW! This is a great idea! My only spare microUSB phone charger is loose to begin with and combined with power flickering issues, my media server goes down all the time and right in the middle of downloads to my HDD. I never though of getting a battery pack and leaving it charge while the pi runs on it. Do they generally tend to stop consuming as much as they normally do once reaching full capacity and then only pull as much power as the pi is draining from them? And also, I assume I would have to ensure the battery provides charge through support so that it can charge while being charged? Some do not. Thanks for the great ideas!

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startrek.steve
Posts: 372
Joined: Thu Aug 30, 2012 7:19 pm

Re: Battery Power/Pack

Fri Jul 31, 2015 7:13 am

Aikidokajeff wrote:I'm using a battery pack for my RaspberryPi.
I purchsed this from Maplin.co.uk: http://www.maplin.co.uk/6000mah-portabl ... ces-625614
It is 6000mAh and has run my raspberryPi for over 6 hours without going off the 100% indicator light.
I'm very impressed.

My Pi with battery pack attached :-)
Image
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I ran my Pi1 on one of these, and got 30 hours of use before it went flat! Using Wifi to download with Get_Iplayer to a usb stick.

Steve
Pi 2 running LibreElec Krypton, Pi 2 running Wheezy Desktop, Pi 1 headless Wheezy, downloading Radio, Pi 1 running Picore headless Media Server, Pi Zero to be an Old Time Radio Project. Pi 3 testing. Pi Zero W downloading Radio shows headless.

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