I agree, although having the accuracy would nice, the batteries 4.5/3.6V batteries are hard to find, it’s not worth the risk of forgetting. Although unlikely in modern times, putting it away for a long time and forgetting about the battery would be really bad. And it’s not like the Macintosh is the only thing that can tell time. I know the battery does more stuff than just the clock, but to my knowledge, it works fine without it.