jerryc41 wrote:
If the battery expands, get rid of it. I had one expand in an iPod, and it popped it open. Lithium batteries are dangerous, so don't mess around with them.
If I'm using a camera on and off, I leave the batteries in it. Cameras that are "put away" till later are battery-less.
I do not remove battery from camera because I don't want the internal battery to be depleted. If the internal battery is depleted for a long time it may go dead and not taking a charge. So when you install the main battery the main battery would charge it but since it's bad it never gets full and drains your main battery. To replace this internal battery you have to send it back to the manufacturer to get it done. It's expensive and if your camera is old enough they wouldn't even do it. Some high end camera this battery can be replaced by the user.