Wait a minute! Do you have one of the old cheap TGL1 Wildviews? If you have one below version 2, you have to remove the card before turning off the power or if it goes dead you would also loose the pics. The Wildview Xtreme 2,3,4 and 5 does not do that. If you have one of the newer ones send it back! My digital readout went bad on one of my xtreme 4's after the warranty was up and they sent me a new one.
http://www.wildviewcam.com/index.html