"Dr. Hal, do you happen to know why there are AA batteries, AAA batteries and C-cells, but no B batteries? Why isn't there a B-cell battery?”
Answer:
Well now, battery designations are based on size, with A the smallest and D the largest. By the same logic, AA's are larger than AAA's. But it happens that with B batteries (yes, they do exist, of course) size doesn't matter-- you don't see B's around because, well, they're just not very useful. The size never caught on in products made for consumers, stores didn't carry them, and now-- just try to find one. They're all over the place in Europe, though, chiefly as the power source of bicycle lamps...
