Use USB device and charge at the same time

[Ericongkc]

My tablet nexus 7 have only 1 usb charging port.
I need to use a usb barcode scanner and also charge the device at the same time
i have not bought any usb converter or hub yet to test.
want to know if this have been tested and worked before.

 

[Frederuco]

Welcome to the forum!

I read that it is possible to do with an adapter like this: Amazon.com: Micro USB Host OTG Cable with Micro USB Power for Samsung i9100 i9300 i9220 i9250 by AtomicMarket: Computers & Accessories

Also, for the N7 you will need to root and run a custom kernel and have an app to activate the function: Amazon.com: T. Zeng's review of Micro USB Host OTG Cable with Micro USB Po...

 

[tpaine]

My self powered usb hub does not charge while the hub is attached. Kind of makes sense, no DC connection, no power drain.

Haven't tried a non powered hub. Seems that would work.

@Federuco

I'm using a non powered OTG cable.

 

[Musing]

This link may be useful.

USB host mode power management extension for Nexus 7