Is there a Cameras that charge off usb or by leaving battery in camera to charge?

I have a Casio Exilim Z600 that I purchased in 2006 and love it! It has a base that it charges on and it will keep a charge for a few weeks still and it's 3.5 years later. I used it to take hundreds of pictures and at least 10 videos of my kids every month. My older child loves to re-play the videos on the camera and the charge still stays for that long. The only complaint I have is that the way in which the wrist cord is attached to the camera. It's difficult to explain but mine detached and there is no way to reattach with out sending back to the manufacturer. I asked 2 separate camera shops in town. I would like to add that I have repeatedly dropped this camera and it still works great with multiple dings.