59iosl30
Posts: 3
Joined: Mon Apr 25, 2016 10:49 am

Raspberry Pi 3 / backpower

Mon Apr 25, 2016 10:57 am

Hello!

Can I backpower the Raspberry Pi 3 with a 2 A or 2,5 A powered hub ?
In the same way as it works with the Raspberry Pi 1.

Thank you!

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davidcoton
Posts: 4153
Joined: Mon Sep 01, 2014 2:37 pm
Location: Cambridge, UK

Re: Raspberry Pi 3 / backpower

Mon Apr 25, 2016 2:23 pm

Probably not. The power out to the USB ports is monitored and limited, so you may not be able to feed power back in reverse.
The tracks may not be capable of carrying the full load current.
Even if that much works, the Pi will not start up with only that power source.

Also, feeding power in through the full-size USB connectors bypasses the polyfuse protection, so your Pi is more likely to suffer serious damage if something goes wrong.
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shuckle
Posts: 565
Joined: Sun Aug 26, 2012 11:49 am
Location: Finland

Re: Raspberry Pi 3 / backpower

Mon Apr 25, 2016 4:17 pm

I just tested. it did not work. So unfortunately Pi 3 can not be backpowered.

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