I just started playing the Saturn again after getting my console modded recently (thanks Bratwurst). I never really played the Saturn much before but now I'm loving the games and find myself playing it a lot more.

Now I want to invest in some batteries because I don't think I've ever played a Saturn without having to enter the time/date at the start-up screen and it's driving me nuts. Anyone know of a good source for some cheap Saturn batteries?

Also, how long do the batteries usually last? Would it be a good idea to get several or will one last me a long time?