Welcome to Audiocircle and the RWA forum!
We have been making many Black Lighting units for the CAPS servers. What CAPS unit are you powering (Zuma, Lagoon, Carbon)?
Yes, we make them with the 12V and 9V outputs, and provide the cables. For Zuma, you'll want a 2-pack solution as it draws more
current. The Lagoon and Carbon can be either a 1 pack or 2 pack solution (they get approx. 7 to 8 hours on one pack).
Lead-time is approx. 4 weeks from when we receive your order.
As for carrying on a plane, I am not sure. I would first contact the airline and mention it is a LiFePO4 battery computer power supply (definitely a safer battery chemistry than standard Li-ion and Li-Poly types). Size of the unit is approx. 10" x 6.5" x 3.5" - in a black box. So it will raise suspicion, but should pass inspection if they allow it on the plane in the first place. Sorry I cannot be 100% clear on this - I rather you check with your airline to be safe instead of sorry.