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
NZR RM class (Edison battery-electric) battery-electric railcar was introduced as a faster and more desirable alternative. It ran between Little River and Christchurch twice each way each day, completing the journey in 69 minutes. The railcar was popular with both passengers and crews; it was fast for its time for a rural train on New Zealand's national rail network, and ran cleanly and efficiently. However, it lasted a mere eight years, as it was destroyed in a depot fire in Christchurch in 1934. Conditions created by the Great Depression meant it simply was not possible to build a replacement, and the Edison battery-electric railcar's legacy