Originally Posted by interplanet
I still wish someone from HH could answer the question about a lipo cutoff, whether its a noise indicator or whatnot. Kind of a need to know thing for some of us thinking about preordering.
My guess is that without a motor to run the battery will last a long, long time.
If there's room you can stick the 200 mAh battery in. 200 mAh at 7.2 v is 1440 mW which is a lot of mW's to drive four teeny tiny servos just a little at a time even if you do aerobatics on a ridge all the time.
I am not going to worry about it. I've flown my 1S J3 and Champ for really long periods of time WITH the motor running though not full throttle. The ASK-21 uses a 2S battery and no motor.
If they put an audio low voltage signal in you probably won't hear it anyway!
Edit: practical limits. My longest thermal flights have been around 45 minutes. Maybe I get tired quickly or I don't like getting a stiff neck, but my personal endurance is probably less than the ASK. I may have to get a lounge chair to do some serious testing.