Batteries: A Big Idea That Turned on the World

Even though they power many of our modern conveniences, batteries have a long history. Hank explains how and why these marvels work and what they've been used for over the past 2,000 years!

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Sources:
http://engineering.mit.edu/live/news/2037-how-does-a-battery-work
http://chemwiki.ucdavis.edu/Analytical_Chemistry/Electrochemistry/Voltaic_Cells/Case_Study%3A_Battery_Types
https://batt.lbl.gov/what-is-a-battery/
http://electronics.howstuffworks.com/everyday-tech/battery.htm
http://www.youtube.com/watch?v=GhbuhT1GDpI -- scishow lemon battery
http://news.bbc.co.uk/2/hi/science/nature/2804257.stm#story -- Bagdad batteries
http://www.allaboutbatteries.com/history-of-batteries.html
http://www.energizer.com/learning-center/Pages/battery-history.aspx
http://www.howstuffworks.com/electric-car.htm
http://electronics.howstuffworks.com/everyday-tech/lithium-ion-battery.htm
http://www.scientificamerican.com/article.cfm?id=how-do-rechargeable-that - rechargable
http://www.technologyreview.com/news/416973/cheaper-stronger-lithium-ion-batteries-for-electric-vehicles/
http://www.geek.com/news/how-a-lead-acid-battery-works-1501045/
http://auto.howstuffworks.com/fuel-efficiency/vehicles/electric-car-battery.htm
http://electronics.howstuffworks.com/everyday-tech/battery.htm
http://www.prlog.org/10815582-why-are-some-batteries-rechargeable-but-others-arent.html