I purchased a hoverboard from hoverboard 360 website and they claimed to use Samsung batteries and have passed all regulations to ensure the safety of everyone . They are no name knock offs. My son rode the board for two hours free charging it the board no longer worked . It was a Christmas gift for 400.00 and now my sons Christmas is ruined . I have been unable to reach the via phone and when I sent emails they don't respond back to the questions but go all around . They lied and are a huge rip off