As I stated in a previous post this is my first electric. Today on my second flight after about 5 minutes all power just stopped. Plenty of battery left. My first flight was very light on the throttle. This one was a little more aggressive. I have 5 A123 cells in an eflite power 46 turning a 13x8 APC electric prop. Castle creations phx 60 amp speed control. Static test showed 39 amps and about 600 watts. Low voltage is set correctly thanks to your previous help.

So what happened?

Did I exceed some limits on the motor or speed control? Does the motor draw significantly more amps when inflight and therefore shut something down. I tried the motor and speed control about two hours later and it appeared to run OK on the ground.

Where do I go from here? Help!!