Will 5,1V I 850mA smartphone charger work well to power the Pi?

Just ordered the Pi when I found out that it doesn't come with an charger. However, I got a pretty new Motorola Smartphone charger which outputs 5,1 volts at 850mA. Will this work with the pi or must the voltage be exactly 5,0?

*Think I posted this in the wrong forum, but I can't seem to move it to the Raspberry pi section.

johnbeetem over 12 years ago

5.1V is fine (sorry about the USA punctuation). RasPi follows the USB 5V +/- 5% spec so anything from 4.75V to 5.25V complies. However, because of voltage drops across the micro USB cable and polyfuse F3, it's better to have a bit more than 5.0V, so 5.1V is near-optimal.
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Former Member over 12 years ago in reply to johnbeetem

Ah, well okay, that's great. Thanks!
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johnsocm over 12 years ago

Yes,

Any cellphone charger or Wallwart adapter will work as long as it is close to 5 volts. You definitely do not want more than 5.5V or less than 4.5V. The current does not matter as long as it is over 300mA.

I have a ton of posts on the Rasperry Pi and how to get Quake III up and running on my blog at www.engineerdemos.blogspot.com.

Thank you and enjoy,

Chad Johnson
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