The battery in my Aeris Elite T3 died, so I went and got a new CR2450, replaced it, and now all the symbols on the display are on at the same time, and none of the buttons do anything. I tried removing and replacing it - same thing. Waited for a couple hours in this state, but there's no change. Is it possible that I got a bad battery or something like that, or is there some kind of known issue with this series of computers that may result in this behavior?