prefor
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Raspberry Pi 2 power supply?

Tue May 05, 2015 9:01 pm

Hello, i just purchased a Raspberry Pi 2, which will arrive in a couple of days :D

However i just have one small question... can i use my Raspberry Pi B+ power supply into the RPi2?

If i buy a new power supply, which one should i buy? How much amp and V should it be if i want to connect, my wireless mouse and keyboard?

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Laurens-wuyts
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Re: Raspberry Pi 2 power supply?

Tue May 05, 2015 9:03 pm

I don't know what the specs are of that from your B+, but it think it should be fine. ;)
Otherwise you'll need something like 5V 2A.

Laurens

prefor
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Re: Raspberry Pi 2 power supply?

Tue May 05, 2015 9:07 pm

Laurens-wuyts wrote:I don't know what the specs are of that from your B+, but it think it should be fine. ;)
Otherwise you'll need something like 5V 2A.

Laurens
I have a 1.8A 5V USB B power source...
Well guess i have to buy a new power supply then :D

prefor
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Re: Raspberry Pi 2 power supply?

Tue May 05, 2015 9:15 pm

Do you think this will be enough?

Deltaco USB-AC75:

DELTACO power adapter from 230V to 5V USB, 2,1A with 1m cable. Manufacturer: DELTACO
Input voltage: 230V
Output: 5V
Maximum load: 2,1A
Cable length: 1m
Contact: Micro USB Type B male
Color: Black

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kusti8
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Re: Raspberry Pi 2 power supply?

Tue May 05, 2015 9:24 pm

Yes, but what you had already was fine, although I don't know the real performance. The difference between the B+ and 2B in power is hardly noticeable.
There are 10 types of people: those who understand binary and those who don't.

dom
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
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Re: Raspberry Pi 2 power supply?

Tue May 05, 2015 9:25 pm

Depends on the peripherals (e.g. USB) connected.

1.8A is enough for the Pi2 alone - but you may need more if attaching wifi/disks through USB.

Be aware that some any numbers written on the supply need to be taken with pinch of salt.
Some supplies drop voltage as you consume more power (even when below the rated limit which can cause problems.

Give it a try - you'll get a warning if it's insufficient.

visiedo
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Re: Raspberry Pi 2 power supply?

Wed May 27, 2015 12:26 pm

Hi,
I am about to buy a power supply for my new Raspberry Pi Model B+, since I am getting the low power indicator.

I also saw this model: DELTACO power adapter from 230V to 5V USB, 2,1A But it looks quite small. I wonder if the 2,1A are nominal or Max. And if it will reach 2,1 and still be able to maintain 5V.

fruitoftheloom
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Re: Raspberry Pi 2 power supply?

Wed May 27, 2015 12:30 pm

Retired disgracefully.....

klricks
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Re: Raspberry Pi 2 power supply?

Wed May 27, 2015 12:53 pm

visiedo wrote:Hi,
I am about to buy a power supply for my new Raspberry Pi Model B+, since I am getting the low power indicator.

I also saw this model: DELTACO power adapter from 230V to 5V USB, 2,1A But it looks quite small. I wonder if the 2,1A are nominal or Max. And if it will reach 2,1 and still be able to maintain 5V.
Unless you can find a manufactures data sheet, (if exists), then you will just have to try it and see.

Also a good quality USB cable is important. If too thin and/or too long, the the voltage will drop too much even with a good power supply. I am using a 5V 10A supply and still got the power warning until I made my own USB power cable.
Unless specified otherwise my response is based on the latest and fully updated Raspbian Buster w/ Desktop OS.

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solar3000
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Re: Raspberry Pi 2 power supply?

Wed May 27, 2015 1:43 pm

I have ones running on crappy USB supplys and didn't complain (there's a red light that stays lit unless there's insufficient power).
I have had samsung USB chargers that causes the pi to complain.
I seem to have good luck with 5.2V supplys.
Antikythera

elatllat
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Re: Raspberry Pi 2 power supply?

Wed May 27, 2015 7:34 pm

kusti8 wrote:The difference between the B+ and 2B in power is hardly noticeable.
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