What cable is used to charge the steady grip

[Dreinhart1]

Can some one post a picture of the cable used to charge the steady grip batteries

 

[Eagle's Eye Video]

I purchased the dedicated one from Yuneec... note that it has a built in charge indicator. You could in theory use a different charge cable, but you would have to hook up the camera and phone tablet with the app, to get an idea of the current charge state.