Is it safe to leave my Rubik's Connected charging for a long time? Particula Help Center October 20, 2020 11:42 Updated Yes! There is no problem to leave your cube charging for as long as you’d like. Related articles How do I turn the cube on/off? How long does it take to charge my Rubik's Connected Cube? My Rubik's Connected won't charge or work at all. How do I know how much battery I have left? How do I reset my cube? Comments 0 comments Article is closed for comments.