hi on the charger side i bought a 60v charger from china and went ahead and pluged it in and puff puff it blew up. i had it looked at by an electrician and he said it was wired opposite to normal ie plus was neg . it only blew the internal fuse but it would be good practise to get a multi tester and stick in the plug first so you can see if its wired right. cheers crimsonsnake.