John Casler did a mini review of some Audioquest I think that used a battery.
Do a search and see what you can find. I don't think he thought the battery did much if my memory is correct.
Yes, I have the AudioQuest CV-6 and while they are the best cables I have heard on my system, I can't say they made a night and day difference.
I should mention that the ones I had are speaker cables but they also have the interconnects.
I mean, I added a BP1, definate sonic improvement.
I went to a Denon DVD2200, definate sonic improvement
Went with the CV-6, maybe a slight improvement in detail and bass clairity.
But in defense of the cable, I don't hear much difference between most high end cables.
Nothing like room treatments, Power Treatment, and a new DVD/CD player.
But like anything else, it should be tried in "your" system to get an idea how it works. For example we had an LA Audio Mafia session and placed a Shunyata Hydra in Mad Dog's system and the difference was immediate and distinct.
We brought the Hydra over to my system and the difference was "subtle" and less distinct, especially compared to the BPT stuff I just installed.
So the "sysnergistic" thing is at play here, so don't take my lack of improvement as a "it doesn't work" suggestion.
I think someone else in that thread had experimented with or was manufacturing or selling some other battery powered "digital" cables and felt the "dielectric" technology was utilized more effectivley in the digital realm, than the analog.
(I think it was Bob Crum)
At least that is my recollection.
Since I can sell AudioQuest, I think the post was in the "Commercial" market place if you go searching.