To avoid possible damage, make sure the USB connector is properly align when inserting into the camera for charging.
For cameras with a rectangluar USB port make sure the cable direction is matched with the USB charge terminal. The insert direction is marked on the camera.
For cameras with a rectangluar with rounded edges USB port check the up and down direction.The insert direction is marked on the camera.
If the USB cable cannot be inserted, contact an Authorized Panasonic Service center. For information on service select "Support Links" then "Service locator".