yeah, question two was a little silly. sorry about that.
of course i had a backup, it was the cable. production never stopped.
because it was a new kit, i can't see having a backup for everything on hand. after all the rental fee is for one kit, not two. that being said, i always go out backed up and unless i get struck by lightning while carrying all my gear, sound will get recorded.
so what i'm getting from this discussion is that because of the 12V step up, the QRX is going to be finicky as soon as my battery goes down just a bit. so unless i get the biggest sony batteries rated at 9000mAh I can basically forget it. but using a battery that big i might as well hook up an NP-1 and the camera folks will just have to live with it.