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Ok, so hear is the deal. Brand new 2 meter plane. New Hymax 6330-210, with an ICE 80 HV that has about 20 flights on another plane that worked flawlessly. I am using Power Unlimited&rsquo;s Dean&rsquo;s series connector.</p>

http://www.f3aunlimited.com/webstore/index.php?main_page=product_info&amp;cPath=33_57&a mp;products_id=312</p>

Maiden today. First flight goes off without a hitch. Second flight&hellip;..plug in the batteries and get 10 beeps and the arming code. Taxi out and give it power . It felt a little weak, but being new to 2 meter electric, I lifted off and knew off the bat I didn&rsquo;t have any power. Just got it turned around to the field going down wind. Pan caked it in and took out the landing gear plate.</p>

I downloaded the Castle file and the voltage for the bad flight was only 20 volts. I checked both batteries after and they were fine on voltage. Both batteries have about 30 flights on them.</p>

I hooked up the same batteries on the bench and they now show 40 volts on the Castle file and it runs fine. This whole thing doesn&rsquo;t make any sense. How could the controller arm in the first place if only one battery connection was open to be only 20 volts? If the series connection is broken, &ldquo;no&rdquo; voltage would reach the controller, not half the amount.</p>

Anyone have any ideas?</p>

Thanks</p></span>