"I bought this hub with a motor and Bluetooth controller to replace by faulty battery box. I also downloaded the Power Up app to use on iPhone. Fitted new batteries. Connected to my phone and also the controller. However the lights keep blinking and every time I connect the motor the connection drops off. Tried a few times batteries out ..refitted ..turn on ..wait while Bluetooth loads 100%. As soon as you put a load on it drops out again. Contacted via Lego chat. Did everything the guy said. Still no luck. Can this box be faulty or is it me ? Terrible start to my PowerUp experience. Maybe someone reading this can help."