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Is there a way to find out how much current or power a USB-OTG device can draw while connected to my phone? I'd be happy with something like:-
- an online database like GSMArena with details for lots of phones
- an app I can run on the phone to find it out e.g. from the USB host driver in the kernel
- a file in
/dev I can read (as root, if necessary)
I'd rather not have to test it with hardware by connecting a USB peripheral to it and increasing its current draw until it stops working.
The particular phone I'm interested in is a Nexus 5, but I'm really looking for an answer that's applicable to any phone (that supports USB-on-the-go).
asked Aug 10, 2015 at 13:01
Dan HulmeDan Hulme
34.7k1717 gold badges8989 silver badges152152 bronze badges
I'm not sure this is entirely correct on Android, but on Linux,
lsusb -v tells a lot about USB devices, including their maximum current output. If you can get usbutils on Android, that might tell you.
answered Aug 11, 2015 at 2:23
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