I bought a C1 Black Swegway for my sons birthday and followed the manual charged the hoverboard for 2 hours but the light on the charger never turned green. However the hoverboard showed full green. The board lasted 15 minutes use before the battery died. So charged again but the light on the charger never turned green but charged for under 3 hours as per the manuals instructions again the battery only lasted 15 Minutes of use. Tried the phone number but it stated it was for sales only and the automated system gave option of voice mail as it said all operators busy before cutting me off. I have sent an email to support but no reply and have tried to phone again with same response.