said by Beardsley:
Can you replace the battery in the authenticator? Mines taking a few presses these days before the code comes up so I think the battery is on its way out. If I can't replace the battery I'll need to buy a replacement fob.
That would likely reset the clock (at best) in it rendering all of its codes invalid, or if the programing is stored in ram instead of rom then it could lose the programing.
If you want to test it I'd suggest first remove it from your account
next replace the battery
then re-add it
as you have to provide 2 codes and the serial I'd hope that the new codes would tell bnet the time in the auth effectively.