Added some additional rows to the table in the post above. The battery capacity is puzzling because the Blue Nexus (if it really has a 28.6Ah battery) has 1/3rd the battery life of the BeatBot.
Item
BeatBot Pro
BeatBot
Blue Nexus
Battery Capacity
10,400 mAh
6,700 mAh
28,600 mAh (unsure if...