Season 7 Episodes20
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Ranked #3 of 20 in Season 7•+0.3 vs season avg
How do they make toothbrushes; how do they produce millions of car batteries; and how are cacao beans transformed into chocolate?
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"Battery Power, Chocolate, Toothbrushes" is episode 14 of How Do They Do It? season 7. It scored 7.5/10 from 12 votes, ranking #3 of 20 episodes this season (season average 7.2). It aired on August 27, 2010.