Ya, thats wrong. And so many vintage Mac sites copy others that bad data percolates around. I am guessing that is how long the battery backup or main will last before it dies. I would think a charged camcorder battery would last longer than 10-25 days if not used, but the owners manual (which does not indicate much time wise when it comes to batteries) says that with the auto-power off (low main battery) one has 24 hours to get power to the unit before the main is totally dead.