Essential because the batteries are very low autonomies (probably due to weight constraints). Attention following the charging mode, the battery may lose all autonomy (plug may preferably be on PC and USB power adapter). BE deserves built in original packs drones, because a little pricey for what it is indispensable to make the most of its drone ... can be a marketing coup (buy additional accessories Parrot) unsuccessful in terms of image (can make disappointing purchasing the drone)
