I am using A123 at 2300ma each. My radio failsafe is set to completely shut down the throttle. If i had a power falure it would have been both batterys and no control of the plane. I also use a data logger. When the engine went down I always had complete control of the plane.
Thank you for your advice but the radio have been gone thru and everything is working.
What drove me nuts was I couldn't get it to act up on the ground. So now I'm waiting for a carb kit.
I'll post the results when i fly again. Dennis