Rechargeable battery included. Charger is not included in the 45544 kit.
Professionally tested by my husband.
Comes with 100% complete kit.
All parts inventoried and bagged as shown. Lego has discontinued 45544 and prices have skyrocketed. Get them before they're gone. Perfect for First Lego League, the classroom or robotics enthusiast. I have many available including Brand New Sealed sets (check my other listings)