First I'd check your Deans connectors solder joints and if they are good I would return the EQ10 for service or replacement. No way you should ever get intermittant contact. I have the EQ6 Turbo plus in my DA150 powered Extra 300 and I noticed that my connectors were vibrating off so I have tie wrapped the connectors onto the SmartFly Unit, and I connect my batteries further downline. I also didn't like taking them off the EQ6 every time I was done for the day. Too much wear and too much possible flexing of the board for my liking.
I do wish Smartfly and other power box people would put some sort of lock for connectors so they can't vibrate loose. I had one elevator connector come off the SmartFly power expander in my Aeroworks Extra once which wasn't fun at all (demo flight of course at our fun fly
) so now I use tie wraps and silicone to make sure these dont vibrate loose.
CapCanuck