I haven’t used one of these yet, still using the Scorpion BUGs, but you might want to check out the Optipower Ultra-Guard. here is a link: http://www.optipower.co.uk/Catalogue...0COMBO&cat=132

It turns on by itself when power is connected, looks at the voltage and chooses a voltage just below the system voltage to activate. So if it sees 6V, it picks something like 5.8V to use as a trigger to activate. It is charged by the system and can have a light as an option to tell you it has activated. You do have to turn it off yourself, though I have read somewhere that some Jeti users have figured out how to turn it off remotely.

Personally, on a plane, I would prefer to turn on the system with the Scorpion BUG to check everything before I have armed the motor. But, that’s just personal preference.

Tom M