I took the electric Smoothie out to fly today. It had been nearly two months since the last time I'd taken it out. I charged the batteries when I put it away.
Today when I took the plane out the motor ran for only about 20 seconds. I tried the second battery and the same thing happened.
SO......I took it all home and charged the batteries then took the Smoothie back out. This time everything worked right.

So I guess if it's been a while you should charge the batteries before using them. If this is the case - it makes sense then that you would charge li-po batteris every so often rather than store them with no charging.

I don't know for sure what the protocal is about charging li-pos occasionally but during the off season  I plan on getting mine out and doing just that.
Interestingly,when I took them home for a charge the bats only took a 17 minute charge. I didn't check to see how many amps they took on but it couldn't have been many.
I'm going to take the plane out again today.

Incidentally, I burned out my charge gard. I think because I disconnected the battery but probably should have gotten the clips off the car battery first.