回答“placed lens onto the camera,but no clicking sound. Why?”I haven't used this particular camera, but the click is a purely mechanical one that is made when the lens slots into place. The battery has nothing to do with this. Can you turn the lens back and remove it without pressing the release button? If that is the case it's not securely in place and you'll have to see what's obstructing the mechanism. Even if it does, I'd have a close look at it just to be sure.