The N900s I had modified with Touchstone have all broken or became corrupted with no option to reflash their USB ports being broken, no fault of the Touchstone mod.
I have decided to go with QI on my next try with our newer N900s since that is now the industry charging standard.
There are inexpensive universal charging adapters which have a flat cable which leaves the battery door and plugs in as a cover-plug for the microUSB port.
I am waiting for the delivery but while there seems to be progress towards enabling charging without shorting the data pins with modified battery scripts and the BME replacement the QI universal receiver and plug will work normally in charging status indication, protect the USB port from dust, and is easily removable when I want to use USB host mode, mass storage, or USB 3G network tethering for my laptop.
for example:
http://www.amazon.com/Universal-Wire...dp/B00I1D4DV0/