Google has actually published the proper design for the cable here:

https://android.googlesource.com/device/google/debugcable/+/...

Neat- not quite the same as the Yaesu VX-7R cable: http://www.kc8unj.com/interface.html

Now tell me the secret of where to buy new, tested, guaranteed replacement batteries for my Nexus 4 :-)

I've finally broken mine's digitizer, after two years of other serious falls and baths that had left it in perfect working condition. It might be for the best, considering each Android update lately has been buggier on this now unsupported phone.

I miss this phone already, and I need to find a worthy successor now.

I'd consider sending you my old, untested and unguaranteed battery if it could prolong the life of a Nexus in need :)

Luckily I preserved my original battery because it's still better than any of the replacements I tried. Even so it does not last as long as it did when new.

The replacement batteries can't seem to handle power surges, and this causes the phone to crash.

Oh geez, I'm glad I'm the only one with the battery frustration. I've given up and I'm getting the 5x as soon as it comes out and trashing the Nexus 4. Without a new battery, it's pretty much a brick.