This way I am charging the battery of my actual E-MTB. But I have some power tools where the manual says to do it in the opposite order. And in the manual of the Specialized Turbo Levo it also says the same (like the man in the video does). I'm not sure if it is right or wrong, but here it is:sorry my bad english. The correct order to disconnect the ebike from the electrical current should always be first from the electricity source and after running out of power, you must disconnect the cable from the ebike without any risk to the battery. This should be the case for all electrical appliances. The man in the video does it wrong.