I have to admit, there's a nurse I work with who trained to charge at the same time I did, and we graduated together. I can't stand for him to be in charge over me. He dumps heavy assignments, he doesn't help, if you need actual help you may as well talk to the wall.
Mind you, occasionally he may do a small task for you, if it is clear that you can not do it. But when the next shift comes in and it's time for the charge-to-charge talk, make sure all things are updated, the last two times he was in charge over me, I had to update next shift 'cause he had already left.
With night shift charge being expected to take a patient load, there's many ways to manage that. One, you can split up the heavy patients so the load is about even and hope nothing goes wrong. Two, you can take the most problematic patient on the unit, and help your nurses as best you can, knowing that just taking that patient is a big help. Three, you can take a light load but don't expect to sit on your a$$, you have to be in there helping with actual nursing tasks if you go that route. You can check blood sugars, pass meds if needed, hang IV's, make phone calls, bed change occasionally, help scoot/lift/turn patients, etc.
My style is normally either one or two. VERY rarely is it #3, but I won't rule that out entirely. I always think twice before taking a lighter load. And occasionally when I charge over those that are also charge nurses, I make sure I don't piss 'em off, because what goes around comes around. The particular person I started off talking about, must not have that mentality.