Customers need a way to limit the max charge on their vacuum. It is unethical to not provide a way to stop the charge at a selected percentage. You are literally making us needlessly damage our robot batteries. Either this is blatant negligence on your part, or deliberately hurting your customer to maybe make a little more money. I just got my first Roborock vacuum and generally impressed, except this one blatant flaw. It actually disgusts me when I think about the underhandedness by intentionally leaving out this feature. Seems you are trying to take advantage of people that dont understand lithium ion tech. Unless you are using lithium iron phosphate batteries (which I find unlikely) then this needs to be done yesterday.