Hi. Sorry for resurrecting this old thread but I'm trying to connect wireless charger to service connectors at the back of my N900. Something that has been done here https://ruedigergad.com/2011/08/04/t...-powermat-mod/. But what I want to do is to replace hard button to short D+ and D- with something that will short them only when mobile is being wirelessly charge so if it isn't then I can use normal usb cable for data. I have two ideas how to make it. One is to use TPS2513 http://www.ti.com/product/TPS2513 and the other is to use extra coil that's smaller then main (like this one https://m.aliexpress.com/item/328170...st.32817073842 to scavenge for little bit of power to run perhaps a bipolar transistor (if that would work). Any input on this is much appreciated.