I was sitting for quite some time last night playing with APM settings while running my quad off of battery power. I wasn't running motors or anything like that, just the APM and telemetry radio. In retrospect, that was silly. I should have just plugged it up via USB.Everything was fine until Mission Planner suddenly lost connection with the aircraft. It took me a little while to realize what happened, but when I did realize it, I got a sinking feeling and decided to just walk away for the night.Tonight, I measured my battery and it came in at 8.8V. Ugh. It's on the charger now, but I'm wondering if it's a lost cause? I'd hate to lose one of the three brand new batteries that I bought for my quad project. I knew going in to this project that my newby status would bite me in some way. Hopefully this is the worst that happens. ;)So what do you think? Is my battery toast?