Batteries and the objects they power have come a long way since Alessandro Volta created the first battery more than 200 years ago. The global battery market generates about $50 billion and 3 billion batteries were sold last year alone. The most popular type is the lead acid used in things like cars, motorcycles, boats, and back-up power devices. Other battery types include alkaline, NiMH (nickel-metal hydride), Li-ion (lithium-ion), and LiPo (lithium-polymer). In 1884, Thomas Parker engineered the first battery-powered electric car; its descendant Tesla Model S is now the fastest electric car, boasting an acceleration rate of 0 to 60 mph in 4.2 seconds.
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