I think the battery pack thing only applies to the knight mantles(as those wielders will still be human). The laws would almost certainly still apply to Harry(as he is still capable of being a member of the White Council). Molly, on the other hand, almost certainly does not count as human any more. She's just like the former summer Lady, or even more applicable, Mab or the former winter lady.
I don't know. At that point you're basically saying any rule ever is a moral rule, which dilutes the meaning somewhat.