Electric batteries are devices consisting of two or more electrochemical cells that convert stored chemical energy into electrical energy.
Each cell contains a positive terminal (cathode), and a negative terminal (anode). Electrolytes allow ions to move between the electrodes and terminals, which allows current to flow out of the battery to perform work.
Primary (disposable) batteries are used once and discarded (electrode materials are irreversibly changed during discharge).
Secondary (rechargeable) batteries can be discharged and recharged multiple times (electrode composition is restored by reverse current).
Examples include lead-acid batteries (used in vehicles) and lithium ion batteries (used for portable electronics).
Duracell is a brand of electric battery and the Duracell Bunny, shown here, was a Duracell marketing concept that began in 1973 to communicate that Duracell’s alkaline batteries lasted much longer than zinc carbon batteries.
The small pink fluffy bunny powered by Duracell batteries, which made its debut in the USA, was shown in advertising as being able to outlast all others, supposedly powered by rival batteries, in an array of challenges.
From 1973 to 1980, the Duracell Bunny starred in a toy campaign, which was later rolled out around the world.