Batteries are 2 for the price of 1 THIS WEEKEND ONLY ! At checkout on the 3DR site, use FREE2NDBATTERY
Smart Solo is smart.
I read this article this morning, packed up and then flew around. While I was flying the battery showed 28% power when it came home automatically. I could hear it beeping as it brought itself home and I didn't argue, I figured it must have detected something I otherwise didn't know about. Packed up and came home.
I downloaded the tlogs from the controller and loaded them into Mission Planner to find it went into failsafe due to a low battery - it must have detected the voltage was acceptable but there was insufficient current to safely stay in the air! I looked up this article and have two new batteries on the way.

(note to self, they only last ~6 months under moderate usage, flying twice per week average).
As an aside, I purchased a gimbal at half price via Amazon per another thread here, this was the first flight using the gimbal. The wind was pretty harsh (sending the nearest large flag horizontal), the Solo bucked it seemingly without effort and the footage was crisp, as if there wasn't so much as a breeze.
Seriously, I LOVE this platform. <3
- R
Post note - continuing to analyze in the Mission Planner, a gust of wind hit and there wasn't enough current as tried to correct and the power draw spiked as a result (ie, low current at 28%, battery going bad), resulting in RTH. Would have been fine if I were flying in near-zero wind, but the spike in draw caused it to hit the bottom of the well earlier.
*Smart*...