My laptop only charge when back cover opened

Hi everyone, my lenovo laptop is not charging when I closed the back cover, bout when opened it's charging very well, what seems to be the problem and solution

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@rhulani92972 by back cover do you mean the bottom cover? How old is your battery? What condition is it in? Does it look like it is possibly expanding? Remove the bottom cover and take some pictures of what you see. Post those with your Question. That way we can see what you see. Adding images to an existing question

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