Is there such thing as a b size battery?

A common misconception is that B was skipped because of confusion with high-voltage batteries from old radiOS. But the "B" battery of an old radio circuit has nothing to do with a B-sized cell, which is a 1.5 V (in alkaline) cylindrical cell in the same series as the AA, C, D etc. It's about the same height as a D, but 2/3 the width (skinnier than a C). Not usually found individually, a 4.5 V lantern battery (common in Europe) is actually 3 B's wired together.