Chosen Solution
My FZ220 wants me to set the time every time I turn it on., I think it might be the internal battery Can this be replaced?
How often do you take out the camera’s batteries. I read somewhere that you should leave a fully charged regular battery in the camera for over 24 hours. The external battery charges the internal clock battery.
I recognize this is an old question but just answering for completion sake. Yes, that RTC battery can be replaced.
Here are the DMC FZ200 Disassembly instructions.
