Interesting. I've never seen a post where a Pentax dslr had a dead internal battery, resulting in lost date, time, etc... The Olympus prosumer camera I had, after a few years the internal battery died and it couldn't keep settings.
---------- Post added 05-04-14 at 10:09 AM ----------
Originally posted by Steve.Ledger My K-01 loses date and time when I remove the battery for recharging. But it doesn't lose the location and user settings. Go figure.
Thus I'm assuming these cameras have a small internal battery and a capacitor. The battery keeps track of time and date, as I don't think a capacitor could do that. The capacitor retains user settings. Your internal battery is probably shot.