Hello, My name is ***** ***** I'll be assisting you. I'm sorry you're having problems. In order to assist you, I need to ask for more info.
1) What is the model number off of the back of the TV in question?
2) What remote is it you're using (Cable/SAT remote, original remote, etc.)?
3) What kind of batteries are you using (brand)?
If you're getting a message to change the remote batteries- and you're using a Sky remote, then this has nothing to do with your TV. It has to do with your Sky remote. Since the Panasonic has no way to generate this type of message as it does not know what remote you're using. However your Sky box does have the capability to generate this message, and would indicate the remote is faulty and draining these batteries. You would need to replace the Sky remote to fix the issue.