so, whatcha got going on there rick, let me in on the external power secrets;-)
I had bought 2 EC-90 6V/12V systems, figuring on powering my V3 & D-10 Pro. The JB3 is just so much more cost effective.
So, the EC-90 has 2 four pin XLR out's, 6V and 12V. The 6V end runs the V3 & the 12V end has the (-)tip connector for the DC adapter in the D-10, and a second wire with a Radio Shack female DC power cord, so that you can used whatever tip you want, to run a 12V device. The Creative Car Adapter has a RadioShack Male DC Power Cord plug on it, and the snipped off car-lighter-thingie has a female plug - so it can be plugged into the eco-charge cable or car lighter cable.
As commented somewhere else, I ran the V3 for Cracker, STS9 & moe (over 4 hours total) and still had 2 lights left of meter (60-20% charge), so I doubt the creative adapter was even drawing the 2.5a listed on the label.
No secrets here, I always share wit my friendz...
Rick