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bazzaboy when you say portable panels are you wanting to be able to connect to other vehicles or is it simply so you can move the panels around to catch the sun?
The best location for this regulator or any regulator for that matter is no where near the panel, mount it as close to your battery as possible. Regulators dont like heat, the sun and the back of panels are great sources of heat. By having the regulator close to battery it increases the effectiveness of the regulator and reduces the voltage drop effects.
Mine is permanently mounted in the patrol, and my panels are easily connected/disconnected via anderson plug extension lead for portability chasing the sun.
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