I bought a USB OTG Y cable that has a male USB for charging. On the Nethunter home page it says the kernel includes y-cable charging support, however it doesn't seem to work for me.
I'm using a Nexus 7 2013 flo.

Is there any way to make it work?

I found this image, looking at Option 1: https://timur.mobi/img/otg-chrg-nex7.jpg

Does that mean I could solder the positive and negative from the male USB to the + and - of the female USB OTG cable and charging would work?