matthewtb
Posts: 32
Joined: Wed Nov 09, 2011 1:43 pm

Kindle power supply

Sun Jun 17, 2012 5:58 pm

Hello my pi is coming soon and I want to get everything ready. I think I have a power supply but I am not sure: can I use a kindle USB with ac adapter. The adapter says it is 5v however the mA is 850. Is this okay to run my beloved pi on without blowing it? Thanks ( oh and by the way I am not the best when it comes to mA or voltage!)

dom
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
Posts: 5408
Joined: Wed Aug 17, 2011 7:41 pm
Location: Cambridge

Re: Kindle power supply

Sun Jun 17, 2012 6:00 pm

Should be fine.

rgh
Posts: 212
Joined: Fri Nov 25, 2011 3:53 pm

Re: Kindle power supply

Sun Jun 17, 2012 6:09 pm

Mine runs from the Kindle charger without any problem.

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rpdom
Posts: 16315
Joined: Sun May 06, 2012 5:17 am
Location: Chelmsford, Essex, UK

Re: Kindle power supply

Sun Jun 17, 2012 6:16 pm

As long as it is rated at 5v, and the mA rating is *at least* 700mA (higher is good), then it will be fine.

I have run my Pi from a Kindle charger without problems, although am using a 2000mA (2A) supply now, which also runs some other stuff.

davidmam
Posts: 101
Joined: Tue Dec 06, 2011 4:13 pm

Re: Kindle power supply

Sun Jun 17, 2012 7:17 pm

I found that the long Kindle cable dropped the voltage too much for reliable behaviour. You may want to try a shorter USB cable.

..d

matthewtb
Posts: 32
Joined: Wed Nov 09, 2011 1:43 pm

Re: Kindle power supply

Sun Jun 17, 2012 7:54 pm

Thanks guys

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