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 RB 46), nowadays the "Glückauf-Bahn" from Gelsenkirchen via Wanne-Eickel to Bochum. In the 1930s an experimental battery electric train ran successfully at Bray. The train's batteries were charged at each station via an overhead pickup. The train reached 60 mph. In Japan, JR East tested a "NE Train Smart Denchi-kun" battery electric railcar from 2009. This vehicle is capable of operating under 1,500 V DC overhead wires or on battery power alone for a distance of up to 50 km away from an overhead power supply. The batteries are charged via the pantograph either when running under an overhead electric