Lightspeed attenuator lithium battery pack


I'm going to pick up a lightspeed attenuator but am not certain which 12vdc lithium battery packs on e-bay have 2.5 mm, center positive, plugs. They aren't listed anywhere and I can't figure out how to contact the sellers to ask them. Can you guys help me with this? I'd like to keep it as inexpensive as possible ($20?) and I do want battery vs. wal wart.

Also, what do you think is going to be the best 3 foot rca's under $50? I am thinking signal cable analogue 2's because they have a low capacitance and are $50 a pair. What do you guys think?

Thanks!
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I just used some simple and affordable 18-20 gauge solid core magnet wire for the plugs. I could not hear a sonic difference between it and the one that came with the Li-Ion battery pack. As far as interconnects go, that may be up to your personal tastes and what kind of "tone" you like best. You may have to try a lot of different ones to find what you like, so I would highly suggest going with a company that gives you a 30 day trial and return option. Two I have found quite good in that price range are MAC Ultra-Silvers at $59 or their Quads at $99. MAC charges quite a bit for shipping (over $15 last time I checked), and their wait time is usually 2-3 weeks.JW Audio sells their Cryo Nebulla cables for $79, and $5 shipping.They usually ship in just a few days, and offer free burn-in on their cables. You could try cables from both companies, and just send back the ones you don't prefer.
Hi Bruce, just to correct your opening post, to fit the Lightspeed Attenuator the plug has to be 2.1mm (not 2.5) and centre +positive. You have to ask the ebay sellers but most are 2.1mm and + centre but ask just to make sure.

http://www.ebay.com/sch/i.html?_sacat=0&_from=R40&_nkw=12vdc+Li-Ion+rechargeable&LH_PrefLoc=2

Cheers George
Blue Jeans cables are 12 pf/foot I think. The only ones lower that I've seen were WyWires, but they way out of your listed price range.
how many hours of listening do you end up getting with the 3800mah battery?

do you notice difference in sound?