Why batteries come in so many shapes and sizes

Turns out a nine-volt battery is basically just a bunch of smaller batteries in a trench coat.

🔗 Learn more about the many types of batteries and the electrochemistry held within: https://www.scientificamerican.com/ar...

Also, you may have noticed that we said AAA when we meant AAAA batteries. Gold star for all who caught it ⭐. What we should have said is that a 9-volt is six AAAAs in a trench coat!

🎤 Kelso Harper & Carin Leong
✏️ Jude Coleman
🎞️ Chris Schodt
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