This is a little disheartening in terms of robotics. For a non-trivial robot with a handful of 12V motors and a decent workload, I imagine this would add tens o

This is a little disheartening in terms of robotics. For a non-trivial robot with a handful of 12V motors and a decent workload, I imagine this would add tens of lbs compared to only a handful of ounces using lithium. Of course, those tens of lbs means more power needed to push the robot and you quickly hit the laws of diminishing returns.