It is important that you use the actual charger that's supplied with it or it charges very very very slowly.. sorry probably not much help.

I've got 2 of them, both are arrived broken and are heading back to the factory for repair. - The first one arrived with the screen alternating from gray to a mess of multicoloured lines - after several hours it fixed itself and was perfect then suddenly crapped out again a few weeks later. Before it stopped working I ordered another for a friend and it arrived broken too! Anyone had this issue?