What year saw the invention of the first battery?

Batteries serve as a ubiquitous power source in today's world. They ignite our cars, energize our laptops, enable extended conversations on our cell phones, and even drive electric vehicles for extensive distances on a single charge. Their sizes vary from smaller than a pencil eraser to as vast as 2,000 square meters (21,528 square feet). The world's largest battery can supply electricity to Fairbanks, Alaska, a town of approximately 12,000 residents, for up to seven minutes during emergencies [source: Conway].

The origins of primitive batteries date back to the Parthians around 250 B.C., who resided in what is now modern-day Baghdad [source: Buchmann]. They crafted a clay jar, filled it with vinegar, and inserted a copper cylinder with an iron rod protruding from the top. This early battery was utilized for electroplating silver.

It wasn't until the late 18th century that scientists began conducting more rigorous experiments on electricity and its storage. While earlier attempts stored or generated electricity, none could produce a steady and controllable electric current. This changed with Italian physicist Alessandro Volta, who, in 1800, invented the first modern battery, known as the voltaic pile. Constructed from alternating zinc and copper plates separated by vinegar- or brine-soaked leather or pasteboard, the pile's bottom and top plates served as the positive and negative terminals.

Resembling a stack of coins, the voltaic pile generated a steady electric current, less forceful than earlier experiments, enabling scientists to harness electricity in a controlled manner. A year following its introduction, Volta showcased his invention at the French National Institute, where Napoleon Bonaparte was present. To commemorate Volta's groundbreaking work, the unit of electromotive force was named the volt in his honor.