Quiescent current when Brain2 HD is "Off"
Just a quick update. I have two nitros. Both with HD units on them and both with 2200mAh 2s RX Packs.
I always leave my RX pack plugged into the unit. The only time it's not plugged in is when I'm charging it.
Having done this for about 3 months now, I can say that there is absolutely no issue with doing so. The current as stated by Rik is extremely low, and does not significantly discharge your battery in any reasonable amount of time. I've left the battery plugged in for over a week straight and more and the battery was not measurably lower than fully charged.