Lemon battery Lemon battery A lemon battery is a simple battery often made for the purpose of education. Typically, a piece of zinc metal (such as a galvanized nail) and a piece of copper (such as a penny) are inserted into a lemon and connected by wires. Power generated by reaction of the metals is used to power a small device such as a light emitting diode (LED). The lemon battery is similar to the first electrical battery invented in 1800 by Alessandro Volta, who used brine (salt water) instead of lemon juice. The lemon battery illustrates the type of chemical reaction
Battery electric multiple unit rail. A Combino tramway using four car tramsets equipped with the Sitras HES system has been in regular service from Almada to Seixal, Portugal, since November 2008. It is capable of running up to distances of 2,500 metres without overhead wires. The 20.3km Huai'an tram line in China, opened in February 2016. The line is entirely catenary-free utilising battery-powered trams supplied by CRRC Zhuzhou which recharge at tram stops. The Austrian Federal Railways has purchased at a cost of $1.9 billion 300 Bombardier Talent 3 trains, the battery/electric version of the Talent 2 equipped to operate with batteries and overhead