How does a car battery work?
A car battery
is also known as a 'Lead Acid' battery. It is constructed of positive
electrodes and an electrolyte.
The electrolyte connects the negative and positive electrodes chemically.
A battery only
contains a fixed amount of reactants. When a lead acid battery becomes
discharged both electrodes undergo chemical changes to form lead sulphate
and eventually the battery becomes discharged (dead).