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Apple Charger as Power Supply
Posted: Mon Jul 02, 2012 8:57 pm
by kristiaan_d
Firstly I apologise for posting this as I get the feeling that many people like me have asked.
But, I am looking to order a micro usb lead for my Pi shortly and wanted to know if anyone has run it from an Apple USB charger? it gives 5volts @ 1amp so I cannot see why it won't work but just wanted to check.
Its a Model B Pi btw.
Thanks
Kris
Re: Apple Charger as Power Supply
Posted: Mon Jul 02, 2012 10:08 pm
by itimpi
I have used both iPhone 1A and iPad 2A chargers successfully. You will find both of these on the list of 'known good' devices at
http://www.google.com/search?q=elinux%2 ... 20verified
Re: Apple Charger as Power Supply
Posted: Tue Jul 03, 2012 4:08 pm
by moongravy
I've tried two 2A iPad chargers and neither worked properly. With keyboard/mouse and ethernet connected I get a measurement of around 4.25V from TP1/2. Could be a fault of the cable, but it's the only one I have.
Re: Apple Charger as Power Supply
Posted: Tue Jul 03, 2012 4:40 pm
by JeremyF
moongravy wrote:I've tried two 2A iPad chargers and neither worked properly. With keyboard/mouse and ethernet connected I get a measurement of around 4.25V from TP1/2. Could be a fault of the cable, but it's the only one I have.
If they're Apple brand chargers, then it is definitely the fault of the cable.
Re: Apple Charger as Power Supply
Posted: Tue Jul 03, 2012 4:59 pm
by alexeames
JeremyF wrote:If they're Apple brand chargers, then it is definitely the fault of the cable.
I think Jeremy's right.
A lot of the cheap USB cables on ebay seem to be quite high resistance and cause large voltage drop. Kindle cables are pretty good. You can buy a Samsung branded USB to micro USB cable for less than three pounds and that should be OK as well.
Re: Apple Charger as Power Supply
Posted: Tue Jul 03, 2012 5:07 pm
by Lob0426
I have both iPad and iPhone chargers. They work best with the shorter USB cords. The 6ft (2m) cords have to much resistance and drop voltage.
Re: Apple Charger as Power Supply
Posted: Tue Jul 03, 2012 6:03 pm
by alexeames
6 ft? Wow i thought the Kindle cable was long.
Re: Apple Charger as Power Supply
Posted: Tue Jul 03, 2012 7:56 pm
by kristiaan_d
thanks for the replies guys, good to know that they work fine, I'm going to look for a shortish cable (i was aware of the whole voltage drop vs length issue).
I've got the memory card and bits just need a way to power it lol
Re: Apple Charger as Power Supply
Posted: Wed Jul 18, 2012 5:31 am
by Ocean20
I think you will find that the iphone charger is rated at 1 amp while the ipad charger is rated at 2 amp. Both are 5 vdc or thereabouts
Re: Apple Charger as Power Supply
Posted: Wed Feb 26, 2014 7:18 am
by guruvaraja
Successfully used my iPad charger with 5V and capacity to deliver up to 1Amps .
power to Rasapberry pi was effected by Small usb port and i used my USB port to handle USB hub to connect with key pad & mouse